Koustuv Debnath

About

Dr. Koustuv Debnath, is working in the area of Experimental and Computational Fluid Mechanics for more than twenty years. He is a researcher in the field of turbulence and vorticity dynamics and recent endeavors include understanding the complex turbulent flow field of wave dominated flows with the understanding of turbulence production, dissipation, energy budget, the eddy structure, turbulent bursting structures and the energy distribution across different scales for boundary layer flows with rough boundary. He has also worked in understanding the turbulence characteristics of free shear flows that include turbulent mixing of jets with boundary interaction, grid generated turbulence, bluff body problems for both only current and wave induced flows. Over the years he has also worked in problems in the domain of two-phase flow, sediment fluid interaction, eco-hydraulics, flow-biota interaction, scouring problems associated with hydraulic structures including bank erosion, characterization of parameters of time-space averaged Navier Stokes equations and magneto-hydrodynamics and many others. Under his guidance 07 students have been conferred doctorate degrees and currently few more students are carrying out doctoral research under his supervision. Further he has guided around 15 MTech Thesis and many projects at the Undergraduate level. In the past he carried out research as a Post Doctoral Research Fellow at the National Institute of Water and Atmospheric Research, New Zealand and as a Visiting Scientist at the Univesity of Aberdeen, Scotland. He is reviewer for many International Journals and has authored several Journal articles in peer reviewed Journals and conference proceeedings. His teaching activities include courses related to Fluid Mechanics, Turbulence, Hydraulics, Aerodynamics and Mechanics. He has received Research Awards from the American Society for Civil Engineers, The Indian Society for Hydraulics, The Institution of Engineers (India), Faculty Research Award from the IIEST alumni association – Washington D. C. Metropolitan area, USA. He also served a two year term as the Head, Department of Aerospace Engineering and Applied Mechanics, IIEST Shibpur in the past.

Academic Qualifications

PhD (2002)

Research Statement

Turbulence, Wave dynamics, Fluid Mechanics, CFD, Experimental Mechanics, Hydraulics, Sediment interactions, Aerodynamics

Latest Publications

2 Souvik Roy, Koustuv Debnath, Vikas Kumar Das, Turbulent flow characteristics over an adverse sloping bed: experimental study and analysis, 01-26, ISH Journal of Hydraulic Engineering, 2025

3 Vikas Kumar Das, Koustuv Debnath, Understanding riverbank erosion through the Lens of Turbulence: A review, 649, 132484, Journal of Hydrology, 2025

4 Pankaj Kumar Raushan , Santosh Kumar Singh, Prince Raj Lawrence Raj, Joydeep Bhowmik, Koustuv Debnath, Pankaj Kumar, Turbulent anisotropy and energy distribution over submerged cubical model, 257, 106011, Journal of Wind Engineering and Industrial Aerodynamics, 2025

5 Buddhadeb Mondal, Krishnendu Barman, Koustuv Debnath, Bijoy Singha Mazumder, Characterization of wind effect on environmental dispersion for a shallow wetland flow, 147(2), Canadian Journal of Civil Engineering, (Published online 9 September 2024), 2025

6 Nishant Gupta, Prince Raj Lawrence Raj, Koustuv Debnath, Joydeep Bhowmik, Interactional flow physics of freely falling sphere on stagnant water, 6(4), Engineering Research Express, IOP Publishing, 2024

7 D Chatterjee, BS Mazumder, S Ghosh, K Debnath, Turbulence with associated kinetic energy budget in the region of wave-blocking formed over an obstacle, 36(10), 115103, Physics of Fluids, 2024

8 PM Mohamed Abubacker Siddique, GS Charana, Lawrence Prince Raj, Joydeep Bhowmik, Koustuv Debnath, Investigation of Geometric Parameters on Flap and Slat Aerodynamics in a Three-Element Airfoil, 52(1), 53-71, International Journal of Fluid Mechanics Research, Begell House, 2024

9 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath & Bijoy Singha Mazumder, Distribution of turbulent eddies under wave-current coexisting flow over hemispherical rough bed, (Published online15 October 2024), Stochastic Environmental Research and Risk Assessment, 2024

10 Sourav Sarkar, Nishant Gupta, Koustuv Debnath, Prince Raj Lawrence Raj, Computational Analysis of Flow Around Two Wall-Mounted Trapezoidal Bluff Bodies Arranged in Tandem Position, Published online on September 28, 2024, 1-33, Journal of Fluids Engineering, ASME, 2024

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Research Areas

Turbulence and mixing
Two phase flow, sediment dynamics, transport processes
Aerodynamics
Hydraulics
Fluid Mechanics
Wave dynamics

Teachings

PG Courses

1 Theory of Turbulence

UG Courses

1 Turbulent Flow 2 Hydraulics 3 Low speed Aerodynamics

Publications

1 Pankaj Kumar Raushan ; Bellie Sivakumar; Koustuv Debnath, Turbulent dissipation rate and length-scale anisotropy through passive grid turbulence, 37, 035145, Physics of Fluids, AIP Publishing, 2025 2 Souvik Roy, Koustuv Debnath, Vikas Kumar Das, Turbulent flow characteristics over an adverse sloping bed: experimental study and analysis, 01-26, ISH Journal of Hydraulic Engineering, 2025 3 Vikas Kumar Das, Koustuv Debnath, Understanding riverbank erosion through the Lens of Turbulence: A review, 649, 132484, Journal of Hydrology, 2025 4 Pankaj Kumar Raushan , Santosh Kumar Singh, Prince Raj Lawrence Raj, Joydeep Bhowmik, Koustuv Debnath, Pankaj Kumar, Turbulent anisotropy and energy distribution over submerged cubical model, 257, 106011, Journal of Wind Engineering and Industrial Aerodynamics, 2025 5 Buddhadeb Mondal, Krishnendu Barman, Koustuv Debnath, Bijoy Singha Mazumder, Characterization of wind effect on environmental dispersion for a shallow wetland flow, 147(2), Canadian Journal of Civil Engineering, (Published online 9 September 2024), 2025 6 Nishant Gupta, Prince Raj Lawrence Raj, Koustuv Debnath, Joydeep Bhowmik, Interactional flow physics of freely falling sphere on stagnant water, 6(4), Engineering Research Express, IOP Publishing, 2024 7 D Chatterjee, BS Mazumder, S Ghosh, K Debnath, Turbulence with associated kinetic energy budget in the region of wave-blocking formed over an obstacle, 36(10), 115103, Physics of Fluids, 2024 8 PM Mohamed Abubacker Siddique, GS Charana, Lawrence Prince Raj, Joydeep Bhowmik, Koustuv Debnath, Investigation of Geometric Parameters on Flap and Slat Aerodynamics in a Three-Element Airfoil, 52(1), 53-71, International Journal of Fluid Mechanics Research, Begell House, 2024 9 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath & Bijoy Singha Mazumder, Distribution of turbulent eddies under wave-current coexisting flow over hemispherical rough bed, (Published online15 October 2024), Stochastic Environmental Research and Risk Assessment, 2024 10 Sourav Sarkar, Nishant Gupta, Koustuv Debnath, Prince Raj Lawrence Raj, Computational Analysis of Flow Around Two Wall-Mounted Trapezoidal Bluff Bodies Arranged in Tandem Position, Published online on September 28, 2024, 1-33, Journal of Fluids Engineering, ASME, 2024 11 Kapil Roy, Krishnendu Barman, Santosh Kumar Singh, Koustuv Debnath, Turbulence phenomena due to pure wave over the submerged horizontal cylinder, 46(9), 527, Journal of the Brazilian Society of Mechanical Sciences and Engineering., Springer Berlin Heidelberg, 2024 12 Manas Kumar Bhukta, Santosh Kumar Singh, Snehamoy Majumder, Koustuv Debnath, Modulation of re-circulation zone behind a square obstruction by single inclined turbulent wall jet with varying angle of attack, 6(3), 035536, Engineering Research Express, 2024 13 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath, Rough bed hydrodynamics under wave-current interactional flow field: double averaging approach, 2371824, Journal of Turbulence, 2024 14 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath, Effect of hemispherical roughness spacing on Double-averaged turbulence characteristics for different flow submergence, Canadian Journal of Civil Engineering, 2024 15 Subhadeep Sarkar, Koustuv Debnath, Wave characteristics and energy distribution over the sloping bed, 1-15, Ships and Offshore Structures, 2024 16 Kaushik Mondal, Susanta Chaudhuri, Vikas K Das, Koustuv Debnath, BS Mazumder, Evolution of bed-forms due to associated wave turbulence over a sloping sand bed similar to shoaling zone of sea coast–An experimental approach, 303, 117778, Ocean Engineering, 2024 17 MK Bhukta, SK Singh, S Majumder, K Debnath, Modulation of re-circulation zone behind a square obstruction by blower-induced suction force through an array of small openings in the bed, 46(7), 391, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2024 18 B Mondal, K Barman, K Debnath, Effect of wind and ecological-degradation on environmental dispersion for three-layer depth-dominated wetland flow, 108, 109443, International Journal of Heat and Fluid Flow, 2024 19 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath, Double-averaged turbulence statistics of wave current flow over rough bed with staggered arrangement of hemispherical blocks, 291, 116332, Ocean Engineering, Elsevier, 2024 20 Jayanta Shounda, Krishnendu Barman & Koustuv Debnath, Effect of wave-current flow on double-averaged turbulence properties over rough bed of hemispherical obstacles, 65(4), 572-596, Coastal Engineering Journal, Taylor and Francis, 2024 21 Jayanta Shounda, Krishnendu Barman, Koustuv Debnath, Spatial-averaged turbulence characteristics over staggered pattern roughness, 1-21, Mechanica, Springer Netherlands, 2023 22 Vikas Kumar Das, Santosh Kumar Singh, Bellie Sivakumar, Koustuv Debnath, Testing the complexity and chaotic nature of wave-dominated turbulent flows, 285, 115326, Ocean Engineering, 2023 23 S Hansda, K Debnath, D Pal, Effect of d-type rib roughness on the turbulent structure of side wall boundary layer for wave-current combined flow, Proc IMechE Part M: J Engineering for the Maritime Environment, 2023

24 A. Mondal, S. Chatterjee, A. McDonald Tariang, L. Prince Raj, K. Debnath, Numerical investigation of on-demand fluidic winglet aerodynamic performance and turbulent characterization of a low aspect ratio wing, 10(2), 107-125, Advances in Aircraft and Spacecraft Science, 2023

25 M K Bhukta, S K Singh, K Debnath, S Majumder, Modulation of recirculation zone behind a cubical obstruction by the vertically placed turbulent multijets in the form of shower, 50(1), International Journal of Fluid Mechanics Research, 2023 26 V K Das, K Debnath, B Sivakumar, On the evolution of turbulent characteristics of an eroding cohesive riverbank, 37(4), Stochastic Environmental Research and Risk Assessment, 2023 27 P K Raushan, S K Singh, K Debnath, Turbulent anisotropy and length scale variation over multiple shaped structure, 145(6), 061901, Journal of Offshore Mechanics and Arctic Engineering, ASME, 2023 28 S Sarkar, K Debnath, S K Singh, Near bed flow characteristics over the patch and non-patch zone due to pure wave, 18(9), 1266-1274, Ships and Offshore Structures, Taylor & Francis, 2023 29 S K Singh, V Das, S Chaudhuri, K Debnath, Spatial variation of mean flow and turbulence characteristics within channel contraction–an experimental approach, ISH Journal of Hydraulic Engineering, Taylor and Francis, 2022 30 J Shounda, K Barman, S Roy, K Debnath, Spatial-averaged turbulence statistics over regular arrays of hemispherical roughness, 44(3), 1-19, Journal of the Brazilian Society of Mechanical Sciences and Engineering, Springer, 2022 31 S Roy, V K Das, K Barman, B Mondal, K Debnath, Coupled dynamics of river bank undercut depth increment due to random velocity field, 21(3), 493-506, Environmental Engineering & Management Journal (EEMJ), 2022 32 S Hansda, V K Das, K Debnath, Temporal modulation of turbulence structure over progressive erosion boundary under influence of wave current combined flow, 22, 683–713, Environmental Fluid Mechanics, Springer, 2022 33 V K Das, K Debnath, B Sivakumar, Does turbulence show fractal structure within a dynamic undercut of an alluvial riverbank?, 157, 111998, Chaos, Solitons & Fractals, Pergamon, 2022 34 D Dutta, A Dasgupta, P R Lawrence Raj, K Debnath, Drag Reduction and Turbulent Characteristics of a Low Aspect Ratio Wing with Fluidic On-Demand Winglet, 16, 01-16-01-0003, SAE International Journal of Aerospace, 2022 35 S K Singh, K Debnath, Regular wave and turbulent current interaction in free surface flow, 8(2), 153-162, Journal of Ocean Engineering and Marine Energy, Springer, 2022 36 S Sarkar, S Roy, K Barman, V K Das, K Debnath, Turbulence effect on the mechanics of ripple formation under regular wave, 131(2), 1-16, Journal of Earth System Science, Springer, 2022 37 S Chaudhuri, M Pandey, K Debnath, G Oliveto, A comparative study on equilibrium scour volume around circular cylinders in clay–sand mixed cohesive beds, at near threshold velocity of sand–an experimental approach, 22(8), 6777-6791, Water Supply, IWA Publishing, 2022 38 S Chaudhuri, V K Das, K Debnath, S Hansda, Embankment breaching at Indian Sundarban–an assessment on altered primary sediment index properties and fluvial flow parameters, 28(4), 449-460, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2022 39 V K Das, K Debnath, B Sivakumar, On the evolution of turbulent characteristics of an eroding cohesive riverbank, 1-23, Stochastic Environmental Research and Risk Assessment, Springer Berlin Heidelberg, 2022 40 S Sarkar, K Debnath, V K Das, B S Mazumder, Formation and migration of ripple pattern due to pure wave, 28(1), 21-33, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2022 41 S Hansda, K Debnath, Turbulent flow structure over rough side-wall surface under wave-against-current motion, 236(1), 209-227, Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 2022 42 V K Das, S Chaudhuri, K Barman, S Roy, K Debnath, Pier scours in fine-grained non-cohesive sediment and downstream siltation, an experimental approach, 43(3), 365-382, Physical Geography, Taylor & Francis, 2022 43 S K Singh, J Chowdhury, S Ghosh, P K Raushan, K Debnath, P Kumar, Experimental and numerical investigation of flow characteristics in an open rectangular cavity, 28 (Supp 1), 1--13, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2022 44 S K Singh, P K Raushan, K Debnath, Experimental investigation of turbulence produced by stationary grid, 48(2), 69-82, International Journal of Fluid Mechanics Research, 2021 45 S Sarkar, V K Das, K Barman, K Debnath, Effect of the Wave on Sediment Suspension and the Morphological Pattern of Ripple Formation, 56(2), 207-223, Ocean Science Journal, Springer, 2021 46 V K Das, K Debnath, S Roy, K Barman, S Hansda, B S Mazumder, Effect of turbulent structures on the riverbank erosion due to tidal influence: A case study from the Rupnarayan River, eastern India, 130(2), Journal of Earth System Science, 2021 47 V K Das, S Hansda, K Debnath, S Chaudhuri, Riverbank stabilization based on the modulation of the near bank turbulence scales, 23(10), 15290-15313, Environment, Development and Sustainability, Springer, 2021 48 S K Singh, P K Raushan, P Kumar, K Debnath, Anisotropy of Reynolds stress tensor in combined wave-current flow, 143(5), Journal of Offshore Mechanics and Arctic Engineering, ASME, 2021 49 P K Raushan, S K Singh, K Debnath, Turbulence characteristics of oscillating flow through passive grid, 224, 1-13, Ocean Engineering, 2021 50 V K Das, S Hansda, K Debnath, S Chaudhuri, B S. Mazumder, Assessing the hydraulic performance of bamboo logs in riverbank stabilization: case study of Sundarbans, India, 66(1), Hydrological Sciences Journal, Taylor & Francis, 2021 51 D Chatterjee, BS Mazumder, S Ghosh, K Debnath, Turbulent flow characteristics over forward-facing obstacle, 22(3), Journal of Turbulence, 2021 52 S Roy, K Barman, K Debnath, B S Mazumder, Quantification of turbulent structures in and around the boundary region of a turbulent round jet released into counter-flow, 171, 108758, Measurement, 2021 53 P K Raushan, S K Singh, K Debnath, Turbulence anisotropy with higher-order moments in flow through passive grid under rigid boundary influence, 235(19), 3859-3874, Proc IMechE Part C: J Mechanical Engineering Science, Sage, 2021 54 P K Raushan, S K Singh, K Debnath, Role of rigid boundary on the decay of turbulence generated by passive-grid for free surface flow, 235(7), Proceedings of the Institution of Mechanical Engineers, UK, Part C: Journal of Mechanical Engineering Science, Sage, 2021 55 S K Singh, A Khait, P K Raushan, K Debnath, Localized and distributed energy in wave-current flow, 143(1), 1-22, Journal of Offshore Mechanics and Arctic Engineering, ASME, 2021 56 A Paul, P K Raushan, S K Singh, K Debnath, Organized structure of turbulence in wave current combined flow over rough surface using spatio temporal averaging approach, 42(11), 1-17, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2020 57 K Barman, P K Raushan, V K Das, S Roy, S Hansda, K Debnath, Turbulent Flow Characteristics in the Eroded Region of the Side-wall Bank, 19(8), Environmental Engineering and Management Journal, 2020

58 P K Raushan, A Paul, S K Singh, K Debnath, Spatially-averaged turbulent flow characteristics over ribbed surface in presence of unidirectional wave over steady current, 100, 102154, Applied Ocean Research, 2020

59 K Barman, S Roy, K Debnath, Characterization of eddy scales over tandem obstacles for surface wave-dominated flow, 118(12), 1922-1929, Current Science, 2020

60 SK Singh, PK Raushan, K Debnath, BS Mazumder, Higher order turbulent flow characteristics of oscillatory flow over a wall-mounted obstacle, 26(1), 84-95, ISH Journal of Hydraulic Engineering, 2020

61 S Roy, K Barman, K Debnath, Turbulence properties in and around the mixing region of the round jet against current, 95(3), Physica Scripta, 2020

62 S Roy, K Barman, VK Das, K Debnath, BS Mazumder, Experimental Investigation of Undercut Mechanisms of River Bank Erosion Based on 3D Turbulence Characteristics, 7(1), Environmental Processes, 2020

63 VK Das, K Barman, S Roy, S Chaudhuri, K Debnath, Near bank turbulence of a river bend with self similar morphological structures, 191, CATENA, 2020

64 VK Das, S Roy, K Barman, S Chaudhuri, K Debnath, Cohesive river bank erosion mechanism under wave-current interaction: A flume study, 129(1), 1-20, Journal of Earth System Science, 2020

65 S K Singh, P K Raushan, K Debnath, B S Mazumder, Higher order turbulent flow characteristics of oscillatory flow over a wall-mounted obstacle, 26(1), 1--12, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2020 66 S Roy, S Ghoshal, K Barman, V K Das, S Ghosh, K Debnath, Modulation of the recirculation region due to magneto hydrodynamic flow, 22 (1), 282--293, Engineering Science and Technology, an International Journal, Elsevier, 2019 67 S K Singh, K Debnath, Discussion of “Boundary layer development over non-uniform sand rough bed channel”, by Anurag Sharma and Bimlesh Kumar (2017), 25 (3), 282--282, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2019 68 K Barman, S Roy, V K Das, K Debnath, Effect of clay fraction on turbulence characteristics of flow near an eroded bank, 571, 87--102, Journal of Hydrology, Elsevier, 2019 69 V K Das, S Roy, Sayahnya, K Barman, S Chaudhuri, K Debnath, Study of clay--sand network structures and its effect on river bank erosion: an experimental approach, 78, 591, Environmental Earth Sciences, Springer, 2019 70 P K Raushan, S K Singh, K Debnath, Grid-generated turbulence in pulsating flow under the rigid boundary influence, 78, 291--305, European Journal of Mechanics-B/Fluids, Elsevier, 2019 71 S Roy, V K Das, K Debnath, Characteristics of intermittent turbulent structures for river bank undercut depth increment, 172, 356-368, Catena, Elsevier, 2019 72 K Barman, K Debnath, B S Mazumder, Turbulence Over Chains of Hemispherical Ribs Under Waves in a Current, 55(1), 55-75, Water Resources Research, American Geophysical Union, Wiley, 2019 73 S Chaudhuri, K Debnath, S Roy, M K Manik, Flume study on contraction scour in clay–sand mixed cohesive bed., 25(1), 79-86, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2019 74 S Roy, K Debnath, Impact of Frontal Round Jet on Vortex-synchronization Control around a Cylinder: A Turbulence Perspective, 46(7), Canadian Journal of Civil Engineering, Canadian Science Publishing, 2019 75 V K Das, S Roy, K Barman, K Debnath, S Chaudhuri, B S Mazumder, Investigations on undercutting processes of cohesive river bank, 252(26), 110-124, Engineering Geology, Elsevier, 2019 76 S K Singh, P K Raushan, K Debnath, B S Mazumder, Effect of surface wave on development of turbulent boundary layer over a train of rib roughness., 141(6), 061101, Journal of Offshore Mechanics and Arctic Engineering, ASME, 2019 77 S K Singh, P K Raushan, K Debnath, Role of multiple flow stages over submerged structure, 181, 59-70, Ocean Engineering, Elsevier, 2019 78 S Roy, K Barman K Debnath, Statistical Analysis of Flow Structures around a Circular Cylinder, 6, 773-787, Environmental Processes, Springer, 2019 79 S Hansda, K Barman, S Roy, K Debnath, Quantification of turbulent eddies in time-space and frequency domain for wave-current combined flow over side-wall roughness, 186, 106080, Ocean Engineering, Elsevier, 2019 80 S K Singh, V K Pal, K Debnath, A numerical investigation of slip flow through circular micro-channel, 45(5), International Journal of Fluid Mechanics Research, Begell House, 2018 81 K Barman, S Roy, K Debnath, Effect of relative spacing on wake turbulence under wave-current flow, 45(6), 489--503, Canadian Journal of Civil Engineering, Canadian Science Publishing, 2018 82 K Barman, K Debnath, Koustuv, B S Mazumder, Turbulence over a pair of submerged hemispheres in presence of surface waves and following current, 140 (3), 031104, Journal of Offshore Mechanics and Arctic Engineering, ASME, 2018

83 S K Singh, K Debnath, B S Mazumder, Reply to the discussion by Li and Li on “Turbulence over cube-mounted rough bed using spatiotemporal averaging approach”, 46, 69--71, Canadian Journal of Civil Engineering, Canadian Science Publishing, 2018

114 Debnath, K., and Chaudhury, S., Field Measurement and Formulations of Cohesive Sediment Erosion: A Review, 91, 7-15, Journal of the Institution of Engineers (Environmental Engineering Section), 2011

115 K Debnath, S Chaudhuri, Closure to “Bridge Pier Scour in Clay-Sand Mixed Sediments at Near-Threshold Velocity for Sand” by Koustuv Debnath and Susanta Chaudhuri, 137 (10), 1306--1307, Journal of Hydraulic Engineering, ASCE, 2011 116 K Debnath, S Chaudhuri, Effect of suspended sediment concentration on local scour around cylinder for clay--sand mixed sediment beds, 117, 236--245, Engineering Geology, Elsevier, 2011 117 K Debnath, S Chaudhuri, Cohesive sediment erosion threshold: A review, 16 (1), 36--56, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2010 118 K Debnath, S Chaudhuri, Bridge pier scour in clay-sand mixed sediments at near-threshold velocity for sand, 136(9), 597--609, Journal of Hydraulic Engineering, ASCE, 2010 119 K Debnath, S Chaudhuri, Laboratory experiments on local scour around cylinder for clay and clay--sand mixed beds, 111(1-4), 51--61, Engineering Geology, Elsevier, 2010 120 K Debnath, A K Bhattacharya, B Mahato, A Chakrabarti, Volume of Fluid Model for Numerical Simulation of Vegetated Flows, 14 (2), 72--87, ISH Journal of Hydraulic Engineering, Taylor & Francis, 2008 121 V Nikora, S Larned, N Nikora, K Debnath, G Cooper, M Reid, Hydraulic resistance due to aquatic vegetation in small streams: field study, 134(9), 1326--1332, Journal of Hydraulic Engineering, ASCE, 2008 122 K Debnath, V Nikora, A Elliott, Stream bank erosion: In situ flume tests, 133, 256--264, Journal of Irrigation and Drainage Engineering, ASCE, 2007 123 K Debnath, V Nikora, J Aberle, B Westrich, M Muste, Erosion of cohesive sediments: Resuspension, bed load, and erosion patterns from field experiments, 133(5), 508--520, Journal of Hydraulic Engineering, ASCE, 2007 124 A K Bhattacharya, K Debnath, Discussion of “Flow Interaction of Meandering River with Floodplains,” by Kanhu Charan Patra and Srijib K. Kar, 128, 245--245, Journal of Hydraulic Engineering, ASCE, 2002

125 Dey, S and Debnath, K, Sediment pick-up on stream-wise sloping beds (vol 127, pg 39, 2001), 127, 263--263, Journal of Irrigation and Drainage Engineering, ASCE, 2001

126 S Dey, K Debnath, Sediment pickup on streamwise sloping beds, 127(1), 39--43, Journal of Irrigation and Drainage Engineering, ASCE, 2001 127 S Dey, K Debnath, Influence of streamwise bed slope on sediment threshold under stream flow, 126, 255--263, Journal of Irrigation and Drainage Engineering, ASCE, 2000 128 S Dey, H K Dey Sarkar, K Debnath, Sediment threshold under stream flow on horizontal and sloping beds, 125 (5), 545--553, Journal of Engineering Mechanics, ASCE, 1999

1 Kaushik Mondal, Susanta Chaudhuri, Koustuv Debnath, Santhosh K. Singh & Vikas K. Das, Flume Study on Evolution of Bed-Form and Near Bed Flow Dynamics on a Gently Sloping Fine Sand Bed Under the Influence of Pure Waves, I, Hydraulics and Fluid Mechanics, Volume 1 (HYDRO 2023), 2023

2 V K Das, S Chaudhuri, K Debnath, Erosion Mechanisms and Modification of Morphological Pattern of Meandering River Bank - A Case Study at the Middle Flow Regime of the Hooghly River near Nawadip, West Bengal, India, Hydro 2019 International Hydraulics, Water Resources and Coastal EngineeringAt: Osmania University, Hyderabad., 2019

3 S Chaudhuri, V K Das, K Debnath, Scouring and Downstream Bed Deformation due to Obstruction of Stream Flow – an Experimental Study with Fine-grained Non-cohesive Sediment Bed, Session 10A, 1808, 1808, ‘34th IAS Meeting of Sedimentology - International Conference on Sedimentology to face societal challenges on risk, resources and record of the past, at Department of Earth Sciences of Sapienza Univer, 2019

4 V K Das, S Chaudhuri, K Debnath, Effect of caly-sand mixture on river bank morphology and erosion, Session 7L-1826, 1108, 34th IAS (International Association of Sedimentologists) Meeting of Sedimentology, an International Conference on Sedimentology to face societal challenges on risk, resources and record of the past, D, 2019

5 S Chaudhuri, K Debnath, V K Das, Comparison of scour and stream bed modification around circular pier for different stream bed characteristics -an experimental approach, Paper 46, HYDRO 2019 - - 24thInternational Conference on Hydraulics, Water Resources and River Engineering, At: University College of Engineering, Osmania University, Hyderabad, India, 2019

6 V. K. Das, S. Chaudhuri, K. Debnath, Study on Erosion and Undercut of Cohesive River Bank-An Experimental Approach, 36, Proceedings of 23st International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO-2018)NIT, Patna, India., 2018

7 S. K. Singh, P. K. Raushan, K. Debnath, Turbulent flow over a train of K-type roughness., 34, Proceedings of 23st International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO-2018)NIT, Patna, India., 2018

8 P. K. Raushan,K., Debnath, S. K. Singh, Turbulence flow statistics downstream of grids with the various mesh size, 6, Proceedings of 23st International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO-2018), NIT, Patna, India., 2018

9 K. Barman, K. Debnath, Open Channel turbulent flow in the presence of surface wave, 73, International Conference of Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM), IIT Kharagpur, 2017

10 K. Barman, K. Debnath, Wave-current combined interaction on the current flow, International Conference on Ship and Offshore Technology (ICSOT), IIT Kharagpur, 2017

11 K. Barman, K. Debnath, Effect of wave-current interaction over hemispherical obstacle, International conference on Fluid Mechanics and Fluid Power (FMFP), Amrita University, Kerala, 2017

12 S. Roy, K. Pushpak, K. Debnath, Characterization of flow structures for a surface interacting plane turbulent jet, 72, International Conference of Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM), IIT Kharagpur., 2017

13 P. K. Raushan, S. K., Singh, K. Barman, K. Debnath, Combined wave-current turbulent flow over a train of rib roughness, International Conference on Conference on Ship and Offshore Technology (ICSOT), IIT Kharagpur, 2017

14 S. Roy, K. Debnath, Flow characteristics of a surface interacting turbulent jet, International conference on Fluid Mechanics and Fluid Power (FMFP), Amrita University, 2017

15 S. Chaudhuri, K. Debnath, Sediment removal processes from an evolving scour hole around bridge piers in clay-sand mixed cohesive sediment, 124, In book of Abstracts:– International Conference on Developments in Geosciences in the Past Decade – Emerging Trends for the Future and Impact on Society, IIT KGP., 2016

16 S. Chaudhuri, K. Debnath M. K. Manik, Study on contraction scours in clay – sand mixed cohesive bed, 72, International conference on Hydraulics, water Resources and River engineering (HYDRO), CW & PRS, Pune, 8-10 Dec. 2016, 2016

17 J. Chowdhury, S. Ghosh, K. Debnath, Effect of Reynolds number on turbulent flow over open cavity, 63, Proceedings of the 6th International conference on Fluid Mechanics and Fluid Power (FMFP) MNNIT, Allahabad, U.P. India., 2016

18 P. K. Raushan, K. Debnath, K. and S. K. Singh, Development of turbulent boundary layer over a train of rib roughness in the presence of surface wave, 72, Proceedings of the 6th International conference on Fluid Mechanics and Fluid Power (FMFP) MNNIT, Allahabad, U.P. India., 2016

19 S. S. Samantaray, S. Roy, and K. Debnath, Study of turbulent eddies in open channel flow with wave against current, 32, Proceedings of 21st International conference on Hydraulics, water Resources and River engineering (HYDRO), CW & PRS, 2016

20 S. Roy, K. Debnath, Vortex synchronization control around partially submerged cylinder due to wave-current combined flow., 31, Proceedings of 21st International conference on Hydraulics, water Resources and River engineering (HYDRO), CW & PRS., 2016

21 S. Chaudhuri, K. Debnath, M. K. Manik, Flume study on contraction scours in clay – sand mixed cohesive bed, 29, HYDRO-16 INTERNATIONAL, 21st International Conference on Hydraulics, Water Resources and River Engineering, CW & PRS., 2016

22 S. K. Singh, K. Debnath, Turbulent characteristics of flow over large regular bottom roughness, 26, Proceedings of 21st International Conference on Hydraulics, Water Resources and Coastal Engineering (HYDRO) Central Water & Power Research Station, Pune, India., 2016

23 S. K. Singh, K. Debnath, Turbulent flow dynamic in wave-current co-existing environment, 32, Proceedings of 3rd international Conference on Applications of Fluid Dynamics (ICAFD) ), IIT- ISM Dhanbad, Jharkhand, India in Association with Fluid Mechanics Group, University of Botswana, Botswana., 2016

24 K. Barman, K. Debnath, Second order turbulence statistics for wave-current flow, 47, Proceedings of 3rd International Conference on Applications of Fluid Dynamics (ICAFD), IIT- ISM Dhanbad, Jharkhand, India in Association with Fluid Mechanics Group, University of Botswana, Botswana, 2016

25 K. Barman, K. Debnath, Wave-current turbulent flow over submerged tandem hemispheres, 27, International conference on Hydraulics, water Resources and River engineering (HYDRO), CW & PRS, Pune., 2016

26 S Chaudhuri, K Debnath, Sediment Removal Processes from an Evolving Scour Hole around Bridge Piers in Clay-Sand Mixed Cohesive Sediment, 124, Annual General Meeting of the Geological Society of India, 2016

27 K. Barman, K. Debnath, Turbulence flow characteristics over hemispherical obstacles in the presence of surface wave, 76, Proceedings of 20th International conference on Hydraulics, water Resources and River engineering (HYDRO), IIT Roorkee, India., 2015

28 S. K. Singh, K. Debnath, Turbulence over rough-bed using double averaged Navier-Stokes equations, 61, Proceedings of 20th International conference on Hydraulics, water Resources and River engineering (HYDRO), IIT Roorkee, India., 2015

29 S. Chaudhuri, K. Debnath, M. K. Manik, Flume study on bridge pier scour embedded within long contraction for clay-sand mixed cohesive sediment bed, 89, Proceedings of 20th International conference on Hydraulics, water Resources and River engineering (HYDRO), IIT Roorkee, India., 2015

30 K. Barman, K. Debnath, Effect of Submergence around hemispherical obstacle, International conference on Fluid Mechanics and Fluid Power (FMFP), IIT Kanpur, 2014

31 S. K. Singh, K. Debnath, Laboratory investigation of turbulent flow structure over a submerged cubic obstacle, 14-B-681/23, International conference on Fluid Mechanics and Fluid Power (FMFP), IIT Kanpur, 2014

32 K. Barman, K. Debnath, Turbulence characteristics in the wake region of single and double in-line hemispherical obstacles in the presence of surface waves, International Conference of Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM), IIT Kharagpur., 2014

33 S. K. Singh, K. Debnath, Structure of turbulence flow dynamics over a submerged cube, 29-31, International Conference of Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM), IIT Kharagpur., 2014

34 S. Chaudhuri, K. Debnath, Observations on scouring processes within evolving scour hole around cylinders embedded in clay-sand mixed cohesive sediments., 258-264, In book of Abstracts: – Indo-U.S International bilateral workshop on ‘Sedimentation, Erosion, flooding, and Ecological Health of Rivers’ Indian Statistical Institute, Kolkata., 2013

35 K. Barman, K. Debnath, Turbulence characteristics in the wake region of single and double in-line hemispherical obstacles., 50, In book of Abstracts: International Conference on Indian Society of Theoretical and Applied Mechanics (ISTAM-2013), 18-21 Dec., 2013, IIEST (Formerly BESU), Shibpur, India., 2013

36 S. K. Singh, K. Debnath, Study of Turbulence Flow Characteristics over Surface Mounted Cubic Obstacles in a Tandem arrangement, 49, In book of Abstracts: International Conference on Indian Society of Theoretical and Applied Mechanics (ISTAM-2013), 18-21 Dec., 2013, IIEST (Formerly BESU), Shibpur, India., 2013

37 S. Chaudhuri, K. Debnath, K. and M. K. Manik, Experimental stydy on local scour around vertical wall abutment in clay sand mixed cohesive sediment, 51, In book of Abstracts: – 58th Congress of the Indian Society of Theoretical and Applied Mechanics (ISTAM), IIEST, Shibpur., 2013

38 M. K. Manik, K. Debnath, Scour within long contractions within channels in cohesive sediment bed, 50, In book of Abstracts: International Conference on Indian Society of Theoretical and Applied Mechanics (ISTAM-2013), IIEST (Formerly BESU), Shibpur, India., 2013

39 I. Dutta , K. Debnath, Flow Within Channel Contractions, 29, In book of Abstracts: International Conference on Indian Society of Theoretical and Applied Mechanics (ISTAM-2013), 18-21 Dec., 2013, IIEST (Formerly BESU), Shibpur, India., 2013

40 S. Roy, K. Debnath, Turbulent statistics of combined wave current flow over a plane bed., 51, In book of Abstracts: International Conference on Indian Society of Theoretical and Applied Mechanics (ISTAM-2013, IIEST (Formerly BESU), Shibpur, India., 2013

41 K. Debnath, V. Nikora, On threshold of cohesive sediment erosion, Indo-US Bilateral Workshop on "Sedimentation, Erosion, Flooding, and Ecological Health of Rivers". ISI, Kolkata, 1-3 November 2010, 2010

42 S.Chaudhury, K. Debnath, Observations on Scouring Processes within Evolving Scour Hole around Cylinders Embedded in Clay-Sand Mixed Cohesive Sediments, Indo-US Bilateral Workshop on "Sedimentation, Erosion, Flooding, and Ecological Health of Rivers", ISI, Kolkara 1-3 November 2010, 2010

43 K. Debnath, S. Chaudhury, B. P. Mukhopadhyay, Volume of Scour around Circular Cylinder in Clay-Sand Mixed Beds, 7-14, In book of Abstracts, HYDRO-2009, 2009, Indian Society for Hydraulics, 2010

44 D Plew, K Debnath, J Aberle, V Nikora, G Cooper, In situ flume for studying cohesive and non-cohesive sediment erosion, 32, 70, Proceedings of the Congress-International Association for Hydraulic Research, 2007

45 V. I. Nikora, S.Learned, K. Debnath, G. Cooper, M.Reid, N.Nikora, Effects of aquatic and bank vegetation on hydraulic performance of small urban streams, Proceedings of River Flow 2006, 6-8 September 2006, Lisbon, Portugal., 2006

46 K. Debnath, V. I. Nikora, A new instrument for measurement of cohesive sediment erosion, re-suspension and bed load from field experiments, Proceedings of International Conference on Applications of Fluid Mechanics in Industry and Environment, August 28-31, 2006, ISI, Kolkata, India, 2006

47 V Nikora, S Larned, K Debnath, G Cooper, M Reid, N Nikora, Effects of aquatic and bank-side vegetation on hydraulic performance of small streams., 639--646, River Flow 2006: Proceedings of the International Conference on Fluvial Hydraulics, Lisbon, Portugal, 6-8 September 2006, 2006

48 K. Debnath, V. I.Nikora, C. Grace, Cohesive sediment erosion in Canturbury streams, 43-44, In: Book of Abstracts of the New Zealand Hydrological Society Symposium “Hydrology and the Community”, Queenstown, New Zealand, 2004

49 C. Grace, K. Debnath, V. I. Nikora, J. Bulleid, S. De Li ma, J. Aberle, D. Humphreys, New NIWA in-situ sediment flume, 43-44, Book of Abstracts of the New Zealand Hydrological Society Symposium “Hydrology and the Community”, Taupo, New Zealand, 2003

50 A. K. Bhattacharya, K. Debnath, A review of turbulence and its modelling, In book of Abstracts: BSME ASME International Conference on Thermal Engineering, Dhaka, Bangladesh, 2002

51 Dey, S and Debnath, K, An overview on sediment threshold., 8, ACE 2002: International Conference on Advances in Civil Engineering, 2002

52 S. Dey, H. K. Dey Sarkar, K. Debnath, Sediment threshold on stream-wise bed slopes, 255-262, Proc. 26th National Conference on Fluid Mech. and Fluid Power, IIT, Kharagpur, 1999

1 Kaushik Mondal, Susanta Chaudhuri, Koustuv Debnath, Santhosh K. Singh & Vikas K. Das, Flume Study on Evolution of Bed-Form and Near Bed Flow Dynamics on a Gently Sloping Fine Sand Bed Under the Influence of Pure Waves, Hydraulics and Fluid Mechanics, Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 547)), Volume 1, Springer547, , 2025 2 Vikas Kumar Das, Sagnik Jha, Bellie Sivakumar, Koustuv Debnath & Susanta Chaudhuri, Unravelling the Complexity of Turbulent Flows Driven by Waves, Flood Forecasting and Hydraulic Structures, Part of the book series: Lecture Notes in Civil Engineering ((LNCE,volume 546)), Springer546, 301–317, , 2025

3 Krishnendu Barman, Sayahnya Roy, Susanta Chaudhuri, Koustuv Debnath, Recirculation Region Control Behind a Partially Submerged Cylinder Due to Wave Against Current, River, Sediment and Hydrological Extremes: Causes, Impacts and Management, Springer Nature SingaporeBook Chapter, 349-363, , 2023

4 P K Raushan, S K Singh, K Debnath, Turbulence Flow Statistics Downstream of Grids with Various Mesh Sizes, River Hydraulics, Water Science and Technology Library book series (WSTL,volume 110). Springer110, 59-69, , 2022 5 S K Singh, P K Raushan, K Debnath, Turbulent Flow Over a Train of K-Type Roughness, River Hydraulics, Water Science and Technology Library book series (WSTL,volume 110), Springer,110, 207-215, , 2022 6 V K Das, K Debnath, S Chaudhuri, Chapter 7-Stabilization of Manmade Embankments at Indian Sundarbans Estuary Through Turbulence Control at Flow-Sediment Interface: Field Survey and Flume Experimentation, River Dynamics and Flood Hazards, Springer, Singapore127-147, , 2022

7 Manas Kumar Bhukta, Gautam Kumar Bose and Koustuv Debanth, Chapter 8 - Study of Turbulent Plane Circular Jet for Modulation of Recirculation Zone Behind a Cubical Obstruction (Book - Advanced Applications in Manufacturing Enginneering), Woodhead Publishing (Availabe in Science Direct), 2019

Patents

#	Patents	Year

Member

Responsibilities

In-charge, Fluid Mechanics and Hydraulics laboratory

2007 - 2017

Secretary, Departmental Academic Committee, Department of Aerospace Engineering and Applied Mechanics

2013 - 2016

Head, Department of Aerospace Engineering and Applied Mechanics

15-11-2016 to 14-11-2018

Projects

Development of a novel unmanned aerial aquatic vehicle (UAAV) with advanced retractable wing and dual propulsion system, Sponsored
Ongoing
Morphodynamic Evolution of Curved River Bend: Processes, Mechanisms and Protection, Sponsored
Ongoing
River Bank Erosion: influence of tidal flow and vegetative cover, Sponsored
Completed
Turbulence in Rough Bed free surface flow using double averaged Navier Stokes equations, Sponsored
Completed
Guideline development for bridge pier scours in cohesive bedded rivers, Sponsored
Completed
Calibration of Flow-meter, Consultancy
Completed

Awards

Recipient of 2010 American Society of Civil Engineers (ASCE Journal of Hydraulic Engineering) Best Technical Note Award, EWRI, ASCE, USA - Invited to receive the award at Rhode Islands, USA, Year: 2010
Recipient of 2011 Institution of Engineers (India), Environmental Engineering Section, Best Journal paper of the Year Award., Year: 2011
Recipient of “ISH Jal Vigyan Puraskar 2015” The Indian Society for Hydraulics, CWPRS, Pune, Year: 2015
Young Faculty Research Award, YFRA 2017 (Research award), IIEST Shibpur alumni association, Washington DC, US, Year: 2017