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Journal Articles

Effect of Rotation on Heat Transfer in AR = 2:1 and AR = 4:1 Channels Connected by a Series of Crossover Jets

Srivatsan Madhavan, Prashant Singh, Srinath Ekkad
Journal: Journal of Turbomachinery
Article Type: Research Papers
J. Turbomach. June 2022, 144(6): 061011.
Paper No: TURBO-21-1200
DOI: https://doi.org/10.1115/1.4053237
Published Online: February 24, 2022
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Topics: Heat transfer, Heat transfer coefficients, Jets, Rotation, Flow (Dynamics), Fins, Reynolds number, Liquid crystals
Proceedings Papers

Reconstruction of Temperature Distribution for a Turbulent Free Jet Using Background Oriented Schlieren

Benjamin H. Wahls, Kishore Ranganath Ramakrishnan, Srinath Ekkad
Proc. ASME. GT2021, Volume 4: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage; Education; Electric Power, V004T05A011, June 7–11, 2021
Paper No: GT2021-59690
DOI: https://doi.org/10.1115/GT2021-59690
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Topics: Temperature distribution, Turbulence, Nozzles, Temperature, Algorithms, Chemically reactive flow, Displacement, Flow (Dynamics), Steady state, Thermocouples
Proceedings Papers

Effect of Spanwise Hole to Hole Spacing on Overall Cooling Effectiveness of Effusion Cooled Combustor Liners for a Swirl Stabilized Can Combustor

Shoaib Ahmed, Benjamin H. Wahls, Srinath Ekkad, Hanjie Lee, Yin-Hsiang Ho
Proc. ASME. GT2021, Volume 5A: Heat Transfer — Combustors; Film Cooling, V05AT11A002, June 7–11, 2021
Paper No: GT2021-59312
DOI: https://doi.org/10.1115/GT2021-59312
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Topics: Combustion, Combustion chambers, Cooling
Proceedings Papers

Effect of Pin Fins on Jet Impingement Heat Transfer on A Rotating Disk

Pratik S. Bhansali, Kishore Ranganath Ramakrishnan, Srinath Ekkad
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT14A014, June 7–11, 2021
Paper No: GT2021-59797
DOI: https://doi.org/10.1115/GT2021-59797
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Topics: Disks, Fins, Heat transfer, Rotating disks, Turbines
Journal Articles

Heat Transfer Enhancement Through Array Jet Impingement on Strategically Placed High Porosity High Pore-Density Thin Copper Foams

Varun Prasanna Rajamuthu, Sanskar S. Panse, Srinath Ekkad
Journal: Journal of Electronic Packaging
Article Type: Research-Article
J. Electron. Packag. September 2021, 143(3): 031003.
Paper No: EP-20-1090
DOI: https://doi.org/10.1115/1.4049173
Published Online: January 19, 2021
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Topics: Density, Foams (Chemistry), Heat transfer, Porosity, Reynolds number, Metal foams, Copper, Flow (Dynamics), Jets
Proceedings Papers

Characterization of Transient Wall Heat Load for a Low NOx Lean Premixed Swirl Stabilized Can Combustor Under Reacting Conditions

Kishore Ranganath Ramakrishnan, Shoaib Ahmed, Srinath Ekkad, Federico Liberatore, Yin-Hsiang Ho
Proc. ASME. GT2020, Volume 7A: Heat Transfer, V07AT11A002, September 21–25, 2020
Paper No: GT2020-14429
DOI: https://doi.org/10.1115/GT2020-14429
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Topics: Combustion chambers, Heat, Heat transfer, Nitrogen oxides, Stress, Transients (Dynamics), Flames, Flow (Dynamics), Fuels, Reynolds number
Proceedings Papers

Overall Cooling Effectiveness of Effusion Cooled Can Combustor Liner Under Reacting and Non-Reacting Conditions

Shoaib Ahmed, Kishore Ranganath Ramakrishnan, Srinath Ekkad, Prashant Singh, Federico Liberatore, Yin-Hsiang Ho
Proc. ASME. GT2020, Volume 7A: Heat Transfer, V07AT11A008, September 21–25, 2020
Paper No: GT2020-15221
DOI: https://doi.org/10.1115/GT2020-15221
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Topics: Combustion, Combustion chambers, Cooling
Proceedings Papers

Effect of Pore Density on Jet Impingement Onto Thin Metal Foams Under Intermediate Crossflow Scheme

Srivatsan Madhavan, Vivek Subramaniam Sambamurthy, Prashant Singh, Srinath Ekkad
Proc. ASME. IMECE2019, Volume 8: Heat Transfer and Thermal Engineering, V008T09A034, November 11–14, 2019
Paper No: IMECE2019-10748
DOI: https://doi.org/10.1115/IMECE2019-10748
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Topics: Density, Metal foams, Heat transfer, Aluminum, Flow (Dynamics), Foams (Chemistry), Heat transfer coefficients, Jets, Porosity, Steady state
Proceedings Papers

Gas Turbine Combustor Liner Wall Heat Load Characterization for Different Gaseous Fuels

Kishore Ranganath Ramakrishnan, Shoaib Ahmed, Benjamin Wahls, Prashant Singh, Maria A. Aleman, Kenneth Granlund, Srinath Ekkad, Federico Liberatore, Yin-Hsiang Ho
Proc. ASME. IMECE2019, Volume 8: Heat Transfer and Thermal Engineering, V008T09A019, November 11–14, 2019
Paper No: IMECE2019-11283
DOI: https://doi.org/10.1115/IMECE2019-11283
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Topics: Combustion chambers, Gas turbines, Gaseous fuels, Heat, Stress, Flames, Temperature, Heat flux, Methane, Fuels
Journal Articles

Jet Impingement Heat Transfer Enhancement by U-Shaped Crossflow Diverters

Srivatsan Madhavan, Kishore Ranganath Ramakrishnan, Prashant Singh, Srinath Ekkad
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. August 2020, 12(4): 041005.
Paper No: TSEA-19-1414
DOI: https://doi.org/10.1115/1.4045514
Published Online: December 18, 2019
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Topics: Flow (Dynamics), Heat transfer, Heat transfer coefficients, Jets, Reynolds number, Liquid crystals, Gas turbines, Pressure
Journal Articles

Jet Impingement Heat Transfer Enhancement by Packing High-Porosity Thin Metal Foams Between Jet Exit Plane and Target Surface

Srivatsan Madhavan, Prashant Singh, Srinath Ekkad
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. December 2019, 11(6): 061016.
Paper No: TSEA-18-1680
DOI: https://doi.org/10.1115/1.4043470
Published Online: May 22, 2019
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Topics: Heat transfer, Metal foams, Reynolds number, Pressure drop, Jets, Flow (Dynamics), Porosity
Proceedings Papers

An Eight-Passage Serpentine Design for Negating Coriolis Force Effect on Heat Transfer

Prashant Singh, Srinath Ekkad
Proc. ASME. IMECE2018, Volume 8B: Heat Transfer and Thermal Engineering, V08BT10A028, November 9–15, 2018
Paper No: IMECE2018-86354
DOI: https://doi.org/10.1115/IMECE2018-86354
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Topics: Coriolis force, Design, Heat transfer, Blades, Rotation, Flow (Dynamics), Cooling, Gases, Heat transfer coefficients, Thermal stresses
Proceedings Papers

Effects of Reacting Conditions on Flow Fields in a Swirl Stabilized Lean Premixed Can Combustor

Suhyeon Park, Siddhartha Gadiraju, Jaideep Pandit, Srinath Ekkad, Federico Liberatore, Yin-Hsiang Ho, Ram Srinivasan
Proc. ASME. GT2018, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A047, June 11–15, 2018
Paper No: GT2018-77047
DOI: https://doi.org/10.1115/GT2018-77047
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Topics: Combustion chambers, Flow (Dynamics), Fuels, Nozzles, Air flow, Flames, Gas turbines, Kinetic energy, Pressure, Principal component analysis
Journal Articles

Effect of Longitudinal Vortex Generator Location on Thermoelectric-Hydraulic Performance of a Single-Stage Integrated Thermoelectric Power Generator

Samruddhi Deshpande, Bharath Viswanath Ravi, Jaideep Pandit, Ting Ma, Scott Huxtable, Srinath Ekkad
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. October 2018, 10(5): 051016.
Paper No: TSEA-17-1163
DOI: https://doi.org/10.1115/1.4040033
Published Online: June 14, 2018
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Topics: Flow (Dynamics), Generators, Heat, Heat transfer, Pressure drop, Reynolds number, Vortices, Temperature, Fluids, Heat exchangers
Proceedings Papers

Flow Field and Wall Temperature Measurements for Reacting Flow in a Lean Premixed Swirl Stabilized Can Combustor

Suhyeon Park, David Gomez-Ramirez, Siddhartha Gadiraju, Sandeep Kedukodi, Srinath Ekkad, Hee-Koo Moon, Yong Kim, Ram Srinivasan
Proc. ASME. GT2017, Volume 5C: Heat Transfer, V05CT17A009, June 26–30, 2017
Paper No: GT2017-64837
DOI: https://doi.org/10.1115/GT2017-64837
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Topics: Combustion chambers, Flow (Dynamics), Wall temperature, Nozzles, Combustion, Fuels, Convection, Design, Flames, Heat
Proceedings Papers

Numerical and Experimental Investigations for Flow Fields Under Non-Reacting and Reacting Conditions Through a Lean Premixed Fuel Nozzle

Sandeep Kedukodi, Suhyeon Park, Siddhartha Gadiraju, Srinath Ekkad, Yong Kim, Ram Srinivasan
Proc. ASME. GT2017, Volume 5C: Heat Transfer, V05CT17A011, June 26–30, 2017
Paper No: GT2017-64911
DOI: https://doi.org/10.1115/GT2017-64911
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Topics: Flow (Dynamics), Fuels, Nozzles, Combustion chambers, Engineering simulation, Gas turbines, Reynolds number, Simulation, Turbulence, Combustion
Journal Articles

Film Cooling Performance of Tripod Antivortex Injection Holes Over the Pressure and Suction Surfaces of a Nozzle Guide Vane

Sridharan Ramesh, Christopher LeBlanc, Diganta Narzary, Srinath Ekkad, Mary Anne Alvin
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. June 2017, 9(2): 021006.
Paper No: TSEA-15-1181
DOI: https://doi.org/10.1115/1.4035290
Published Online: January 24, 2017
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Topics: Airfoils, Coolants, Cooling, Film cooling, Flow (Dynamics), Geometry, Pressure, Suction, Heat conduction, Density
Proceedings Papers

Experimental Investigation of Heat Transfer Augmentation by Different Jet Impingement Hole Shapes Under Maximum Crossflow

Prashant Singh, Bharath Viswanath Ravi, Srinath Ekkad
Proc. ASME. GT2016, Volume 5B: Heat Transfer, V05BT16A018, June 13–17, 2016
Paper No: GT2016-57874
DOI: https://doi.org/10.1115/GT2016-57874
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Topics: Heat transfer, Shapes, Jets, Stress, Chords (Trusses), Cooling, Heat, Liquid crystals, Pressure, Transients (Dynamics)
Proceedings Papers

Effects of Rotation on Heat Transfer due to Jet Impingement on Cylindrical Dimpled Target Surface

Prashant Singh, Srinath Ekkad
Proc. ASME. GT2016, Volume 5B: Heat Transfer, V05BT16A010, June 13–17, 2016
Paper No: GT2016-57145
DOI: https://doi.org/10.1115/GT2016-57145
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Topics: Heat transfer, Rotation, Flow (Dynamics), Buoyancy, Gas turbines, Pressure, Airfoils, Blades, Chords (Trusses), Cooling
Proceedings Papers

Preliminary Experimental Investigation of Initial Onset of Sand Deposition in the Turbine Section of Gas Turbines

Andrew Boulanger, Hardik Patel, John Hutchinson, William DeShong, Weibin Xu, Wing Ng, Srinath Ekkad
Proc. ASME. GT2016, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A003, June 13–17, 2016
Paper No: GT2016-56059
DOI: https://doi.org/10.1115/GT2016-56059
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Topics: Gas turbines, Sands, Turbines, Particulate matter, Temperature, Damage, Dust, Engines, Erosion, Flow (Dynamics)