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Proceedings Papers

Effects of Freestream Turbulence on Air-Mist Film Cooling: Two-Phase Flow Simulations

Anjali Dwivedi, S. Sarkar
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A019, June 13–17, 2022
Paper No: GT2022-81923
DOI: https://doi.org/10.1115/GT2022-81923
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Topics: Film cooling, Gas turbines, Simulation, Turbulence, Two-phase flow
Proceedings Papers

Transition of a Laminar Separated Boundary Layer Under Varying Adverse Pressure Gradient

Ravi Kumar, Pradeep Singh, S. Sarkar
Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A029, June 13–17, 2022
Paper No: GT2022-83045
DOI: https://doi.org/10.1115/GT2022-83045
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Topics: Boundary layers, Bubbles, Pressure gradient, Separation (Technology)
Proceedings Papers

Effect of Surface Corrugations on Laminar and Transitional Flows

Ishita Jain, S. Sarkar
Proc. ASME. GT2022, Volume 11: Wind Energy, V011T38A007, June 13–17, 2022
Paper No: GT2022-81910
DOI: https://doi.org/10.1115/GT2022-81910
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Topics: Flow (Dynamics)
Proceedings Papers

Transitional Flow and Heat Transfer on the Pressure Surface of a C-D Compressor Blade

S. Katiyar, S. Sarkar
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A014, November 1–5, 2021
Paper No: IMECE2021-71171
DOI: https://doi.org/10.1115/IMECE2021-71171
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Topics: Blades, Compressors, Flow (Dynamics), Heat transfer, Large eddy simulation, Pressure
Proceedings Papers

Effect of Hemispherical Protuberance on the Leading-Edge to Control the Laminar Separation Bubble

Pradeep Singh, S. Sarkar
Proc. ASME. IMECE2021, Volume 10: Fluids Engineering, V010T10A017, November 1–5, 2021
Paper No: IMECE2021-73068
DOI: https://doi.org/10.1115/IMECE2021-73068
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Topics: Bubbles, Separation (Technology), Turbulence, Vortices
Journal Articles

Excitation of Shear Layer Due to Surface Roughness Near the Leading Edge: An Experiment

Pradeep Singh, S. Sarkar
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. May 2021, 143(5): 051301.
Paper No: FE-20-1373
DOI: https://doi.org/10.1115/1.4049685
Published Online: February 8, 2021
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Topics: Bubbles, Excitation, Shear (Mechanics), Surface roughness, Flow (Dynamics), Turbulence, Separation (Technology), Boundary layers
Proceedings Papers

Large Eddy Simulation of Wake-Shear Layer Interactions Over a Multi-Element Aerofoil

Souvik Naskar, S. Sarkar
Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A001, September 21–25, 2020
Paper No: GT2020-14115
DOI: https://doi.org/10.1115/GT2020-14115
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Topics: Airfoils, Large eddy simulation, Shear (Mechanics), Wakes
Proceedings Papers

Leading Edge Contamination of a C-D Compressor Blade Using Large Eddy Simulation

S. Katiyar, S. Sarkar
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A002, September 21–25, 2020
Paper No: GT2020-14192
DOI: https://doi.org/10.1115/GT2020-14192
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Topics: Blades, Compressors, Contamination, Large eddy simulation, Separation (Technology)
Proceedings Papers

Flow and Heat Transfer Analysis of Mist-Film Cooling on a Flat Plate

Anjali Dwivedi, Ankit Verma, S. Sarkar
Proc. ASME. GTINDIA2017, Volume 1: Compressors, Fans and Pumps; Turbines; Heat Transfer; Combustion, Fuels and Emissions, V001T03A005, December 7–8, 2017
Paper No: GTINDIA2017-4568
DOI: https://doi.org/10.1115/GTINDIA2017-4568
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Topics: Cooling, Flat plates, Flow (Dynamics), Heat transfer, Drops, Blades, Latent heat, Absorption, Computation, Computer simulation
Proceedings Papers

Absolute and Convective Instabilities of a Separated Boundary Layer Near the Leading Edge of an Aerofoil

S. Sarkar, K. S. Jadhav
Proc. ASME. GT2017, Volume 2D: Turbomachinery, V02DT46A031, June 26–30, 2017
Paper No: GT2017-65265
DOI: https://doi.org/10.1115/GT2017-65265
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Topics: Airfoils, Boundary layers, Impulse (Physics), Chords (Trusses), Deflection, Flow (Dynamics), Particulate matter, Reynolds number, Spacetime, Stability
Journal Articles

A Passivity-Based Power-Shaping Control of Building HVAC Systems

V. Chinde, K. C. Kosaraju, A. Kelkar, R. Pasumarthy, S. Sarkar, N. M. Singh
Journal: Journal of Dynamic Systems, Measurement, and Control
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. November 2017, 139(11): 111007.
Paper No: DS-16-1393
DOI: https://doi.org/10.1115/1.4036885
Published Online: July 28, 2017
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Topics: Air conditioning, Control equipment, Control systems, Dynamics (Mechanics), Equilibrium (Physics), Heat exchangers, Heating, HVAC equipment, Simulation, Storage
Journal Articles

Effect of Vortex Generators on Film Cooling Effectiveness

S. Sarkar, Ganesh Ranakoti
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. June 2017, 139(6): 061009.
Paper No: TURBO-16-1203
DOI: https://doi.org/10.1115/1.4035275
Published Online: February 7, 2017
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Topics: Film cooling, Generators, Vortices, Flow (Dynamics), Coolants
Journal Articles

Features of a Laminar Separated Boundary Layer Near the Leading-Edge of a Model Airfoil for Different Angles of Attack: An Experimental Study

K. Anand, S. Sarkar
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2017, 139(2): 021201.
Paper No: FE-15-1723
DOI: https://doi.org/10.1115/1.4034606
Published Online: November 3, 2016
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Topics: Airfoils, Boundary layers, Bubbles, Flow (Dynamics), Separation (Technology), Turbulence, Fluctuations (Physics), Shear (Mechanics)
Journal Articles

Large Eddy Simulation of Self-Sustained Cavity Oscillation for Subsonic and Supersonic Flows

K. M. Nair, S. Sarkar
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. January 2017, 139(1): 011102.
Paper No: FE-15-1493
DOI: https://doi.org/10.1115/1.4034371
Published Online: October 18, 2016
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Topics: Acoustics, Cavities, Eddies (Fluid dynamics), Flow (Dynamics), Oscillations, Shear (Mechanics), Supersonic flow, Vortices, Waves, Feedback
Proceedings Papers

Effect of Vortex Generators on Film Cooling Effectiveness

S. Sarkar, Ganesh Ranakoti
Proc. ASME. GTINDIA2015, ASME 2015 Gas Turbine India Conference, V001T04A007, December 2–3, 2015
Paper No: GTINDIA2015-1392
DOI: https://doi.org/10.1115/GTINDIA2015-1392
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Topics: Film cooling, Generators, Vortices, Jets, Combustion chambers, Computation, Coolants, Density, Flat plates, Gases
Proceedings Papers

Thermal Analysis of a Turbine Blade: Effect of Film Cooling and Internal Convective Cooling

S. Sarkar, P. Gupta
Proc. ASME. GTINDIA2015, ASME 2015 Gas Turbine India Conference, V001T04A003, December 2–3, 2015
Paper No: GTINDIA2015-1296
DOI: https://doi.org/10.1115/GTINDIA2015-1296
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Topics: Cooling, Film cooling, Thermal analysis, Turbine blades, Blades, Gas turbines, Heat transfer, Suction, Aerodynamics, Computational fluid dynamics
Journal Articles

Interactions of Separation Bubble With Oncoming Wakes by Large-Eddy Simulation

S. Sarkar, Harish Babu, Jasim Sadique
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. February 2016, 138(2): 021703.
Paper No: HT-14-1534
DOI: https://doi.org/10.1115/1.4031645
Published Online: October 21, 2015
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Topics: Boundary layers, Bubbles, Flow (Dynamics), Heat transfer, Separation (Technology), Turbulence, Wakes, Vortices, Temperature, Fluctuations (Physics)
Journal Articles

Effects of Free-Stream Turbulence on Transition of a Separated Boundary Layer Over the Leading-Edge of a Constant Thickness Airfoil

A. Samson, S. Sarkar
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2016, 138(2): 021202.
Paper No: FE-14-1220
DOI: https://doi.org/10.1115/1.4031249
Published Online: September 3, 2015
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Topics: Boundary layers, Bubbles, Flow (Dynamics), Turbulence, Separation (Technology), Airfoils, Shear (Mechanics)
Proceedings Papers

Experiments on Leading-Edge Induced Separated Shear Layer Under Various Imposed Pressure Gradients

K. Anand, S. Sarkar, N. Thilakan
Proc. ASME. GTINDIA2014, ASME 2014 Gas Turbine India Conference, V001T05A003, December 15–17, 2014
Paper No: GTINDIA2014-8177
DOI: https://doi.org/10.1115/GTINDIA2014-8177
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Topics: Pressure gradient, Shear (Mechanics), Separation (Technology), Bubbles, Flow (Dynamics), Reynolds number, Chords (Trusses), Deflection, Dimensions, Flat plates
Journal Articles

Computation of the Flow Over a Sphere at Re = 3700: A Comparison of Uniform and Turbulent Inflow Conditions

Y. Bazilevs, J. Yan, M. de Stadler, S. Sarkar
Journal: Journal of Applied Mechanics
Article Type: Research-Article
J. Appl. Mech. December 2014, 81(12): 121003.
Paper No: JAM-14-1346
DOI: https://doi.org/10.1115/1.4028754
Published Online: October 20, 2014
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Topics: Flow (Dynamics), Inflow, Turbulence, Statistics, Computation, Simulation