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Srinath V. Ekkad
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Proceedings Papers

Numerical Heat Transfer Analysis of NACA Pin-Fin Thickness

Rutledge Fogel, Srinath V. Ekkad
Proc. ASME. HT2024, ASME 2024 Heat Transfer Summer Conference, V001T09A003, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: HT2024-131359
https://doi.org/10.1115/HT2024-131359
View Paper titled, Numerical Heat Transfer Analysis of NACA Pin-Fin Thickness
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Topics: Gas turbines, Heat transfer
Proceedings Papers

Characteristics of Premixed Ammonia/Methane/Air Blends As an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage

Meghna Das Chaudhury, Abinash Sahoo, Kaushik Nonavinakere Vinod, Wesley Fisher, Srinath V. Ekkad, Venkateswaran Naranaswamy, Tiegang Fang
Proc. ASME. GT2024, Volume 2: Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels, V002T03A029, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128437
https://doi.org/10.1115/GT2024-128437
View Paper titled, Characteristics of Premixed Ammonia/Methane/Air Blends As an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage
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Topics: Combustion chambers, Emissions, Flames, Fuels, Gas turbines, Heat, Methane, Stability, Stress
Proceedings Papers

Effect of Rotation on 45-Degree Broken V-Ribs in a 2 Pass Square Channel

Madhusudan Pallikaranai Thirumalai, Srinath V. Ekkad
Proc. ASME. GT2024, Volume 8: Heat Transfer: Internal Air Systems; Heat Transfer: Internal Cooling; Industrial and Cogeneration, V008T15A026, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128221
https://doi.org/10.1115/GT2024-128221
View Paper titled, Effect of Rotation on 45-Degree Broken V-Ribs in a 2 Pass Square Channel
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Topics: Liquid crystals, Rotation, Thermography, Cooling, Heat transfer, Gas turbines, Turbine blades, Turbines, Air-breathing engines, Airfoils
Proceedings Papers

Thermohydraulic Performance Analysis in Square Duct Featuring Novel High-Performance Broken Ribs and Ribs With Fins for High Reynolds Number Gas Turbine Blade Internal Cooling

Naimish Pandya, Srinath V. Ekkad
Proc. ASME. GT2024, Volume 12C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V12CT32A057, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-129536
https://doi.org/10.1115/GT2024-129536
View Paper titled, Thermohydraulic Performance Analysis in Square Duct Featuring Novel High-Performance Broken Ribs and Ribs With Fins for High Reynolds Number Gas Turbine Blade Internal Cooling
Open the PDF for Thermohydraulic Performance Analysis in Square Duct Featuring Novel High-Performance Broken Ribs and Ribs With Fins for High Reynolds Number Gas Turbine Blade Internal Cooling in another window
Topics: Blades, Cooling, Ducts, Fins, Gas turbines, Heat transfer, Reynolds number, Geometry, Computational fluid dynamics, Computer simulation
Journal Articles

Characteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage

Meghna Das Chaudhury, Abinash Sahoo, Kaushik Nonavinakere Vinod, Wesley Fisher, Srinath V. Ekkad, Venkateswaran Narayanaswamy, Tiegang Fang
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2024, 146(11): 111012.
Paper No: GTP-24-1232
https://doi.org/10.1115/1.4065923
Published Online: August 16, 2024
View Article titled, Characteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage
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Topics: Combustion chambers, Flames, Fuels, Heat, Methane, Stress, Emissions, Gas turbines, Stability
Proceedings Papers

Combustor Wall Heat Transfer and Emission Characteristics of Premixed Ammonia/Methane/Air Blends in a Swirl Stabilized Gas Turbine Combustor

Meghna Das Chaudhury, Abinash Sahoo, Srinath V. Ekkad, Venkateswaran Narayanaswamy
Proc. ASME. IMECE2023, Volume 10: Heat Transfer and Thermal Engineering, V010T11A026, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-112466
https://doi.org/10.1115/IMECE2023-112466
View Paper titled, Combustor Wall Heat Transfer and Emission Characteristics of Premixed Ammonia/Methane/Air Blends in a Swirl Stabilized Gas Turbine Combustor
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Topics: Combustion chambers, Emissions, Gas turbines, Heat transfer, Methane, Thermography
Proceedings Papers

Numerical Investigation of Broken V-Ribbed Turbulators in a Multi-Pass Turbine Channel Under Rotating Conditions

Madhusudan Pallikaranai Thirumalai, Srinath V. Ekkad
Proc. ASME. IMECE2023, Volume 10: Heat Transfer and Thermal Engineering, V010T11A028, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-113885
https://doi.org/10.1115/IMECE2023-113885
View Paper titled, Numerical Investigation of Broken V-Ribbed Turbulators in a Multi-Pass Turbine Channel Under Rotating Conditions
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Topics: Airfoils, Centrifugal force, Computer simulation, Cooling, Design, Failure, Gas turbines, Heat flux, Heat transfer, Heat transfer coefficients
Journal Articles

Effects of Variable Pressure Outlets for Array Jet Impingement Cooling With a Bidirectional Exit Air Scheme

Michael Bonds, Jr., Ganesh Subbarama Iyer, Srinath V. Ekkad
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. November 2023, 145(11): 113801.
Paper No: HT-23-1014
https://doi.org/10.1115/1.4063106
Published Online: September 4, 2023
View Article titled, Effects of Variable Pressure Outlets for Array Jet Impingement Cooling With a Bidirectional Exit Air Scheme
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Topics: Flow (Dynamics), Impingement cooling, Liquid crystals, Reynolds number, Temperature, Transients (Dynamics), Jets, Heat transfer coefficients, Pressure, Combustion
Proceedings Papers

Detailed Heat Transfer Coefficient Distributions Under an Array of Impinging Jets With Coolant Extraction

Yizhe Huang, Srinath V. Ekkad, Je-Chin Han
Proc. ASME. IMECE96, Heat Transfer: Volume 2 — Heat Transfer in Turbulent Flows; Fundamentals of Convection Heat Transfer; Fundamentals of Natural Convection in Laminar and Turbulent Flows; Natural Circulation, 143-150, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0067
https://doi.org/10.1115/IMECE1996-0067
View Paper titled, Detailed Heat Transfer Coefficient Distributions Under an Array of Impinging Jets With Coolant Extraction
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Topics: Coolants, Heat transfer coefficients, Jets, Heat transfer, Flow (Dynamics), Coating processes, Coatings, Impingement cooling, Liquid crystals, Pressure
Proceedings Papers

Effusion Cooling: Influence of Pressure Drop

Michael Bonds, Jr., Benjamin H. Wahls, Srinath V. Ekkad, Nagaraja Rudrapatna, Rudy Dudebout, Ryan Meyer
Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT11A003, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82067
https://doi.org/10.1115/GT2022-82067
View Paper titled, Effusion Cooling: Influence of Pressure Drop
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Topics: Combustion gases, Cooling, Pressure drop
Journal Articles

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 V. Ekkad, Hanjie Lee, Yin-Hsiang Ho
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2022, 144(7): 071015.
Paper No: TURBO-21-1168
https://doi.org/10.1115/1.4054442
Published Online: May 27, 2022
View Article titled, Effect of Spanwise Hole-to-Hole Spacing on Overall Cooling Effectiveness of Effusion Cooled Combustor Liners for a Swirl-Stabilized Can Combustor
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Topics: Combustion chambers, Cooling, Flow (Dynamics), Coolants, Temperature
Journal Articles

Effect of Pin Fins on Jet Impingement Heat Transfer Over a Rotating Disk

Pratik S. Bhansali, Kishore Ranganath Ramakrishnan, Srinath V. Ekkad
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. April 2022, 144(4): 042303.
Paper No: HT-21-1503
https://doi.org/10.1115/1.4053371
Published Online: February 10, 2022
View Article titled, Effect of Pin Fins on Jet Impingement Heat Transfer Over a Rotating Disk
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Topics: Disks, Fins, Flow (Dynamics), Heat transfer, Nozzles, Rotating disks, Rotation, Heat losses, Reynolds number
Includes: Supplementary data
Proceedings Papers

Influence of Cross-Flow Induced Swirl and Impingement on Heat Transfer in an Internal Coolant Passage of a Turbine Airfoil

Srinath V. Ekkad, Gautam Pamula, Sumanta Acharya
Proc. ASME. IMECE99, Heat Transfer: Volume 1, 227-233, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-0989
https://doi.org/10.1115/IMECE1999-0989
View Paper titled, Influence of Cross-Flow Induced Swirl and Impingement on Heat Transfer in an Internal Coolant Passage of a Turbine Airfoil
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Topics: Airfoils, Coolants, Cross-flow, Heat transfer, Turbines, Flow (Dynamics), Design, Flow turning, Friction, Heat transfer coefficients
Proceedings Papers

Dimple Enhanced Heat Transfer in High Aspect Ratio Channels

Srinath V. Ekkad, Hasan Nasir
Proc. ASME. IMECE2001, Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 385-391, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/HTD-24322
https://doi.org/10.1115/IMECE2001/HTD-24322
View Paper titled, Dimple Enhanced Heat Transfer in High Aspect Ratio Channels
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Topics: Heat transfer, Pressure drop, Channel flow, Flow (Dynamics), Heat transfer coefficients, Liquid crystals, Reynolds number, Transients (Dynamics)
Proceedings Papers

Film Cooling on a Flat Surface With a Single Row of Cylindrical Angled Holes: Effect of Discrete Tabs

Srinath V. Ekkad, Hasan Nasir, Sumanta Acharya
Proc. ASME. IMECE2000, Heat Transfer: Volume 3, 3-12, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1455
https://doi.org/10.1115/IMECE2000-1455
View Paper titled, Film Cooling on a Flat Surface With a Single Row of Cylindrical Angled Holes: Effect of Discrete Tabs
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Topics: Film cooling, Wind tunnels, Liquid crystals, Reynolds number, Transients (Dynamics), Turbulence
Proceedings Papers

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 V. Ekkad
Proc. ASME. GT2021, Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, V05BT15A014, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59426
https://doi.org/10.1115/GT2021-59426
View Paper titled, Effect of Rotation on Heat Transfer in AR = 2:1 and AR = 4:1 Channels Connected by a Series of Crossover Jets
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Topics: Heat transfer, Jets, Rotation, Cooling, Fins, Flow (Dynamics), Blades, Chords (Trusses), Coolants, Gas turbines
Proceedings Papers

Effect of Variation of Pin-fin Height on Jet Impingement Heat Transfer on a Rotating Surface

Pratik S. Bhansali, Srinath V. Ekkad
Proc. ASME. HT2021, ASME 2021 Heat Transfer Summer Conference, V001T04A006, June 16–18, 2021
Publisher: American Society of Mechanical Engineers
Paper No: HT2021-63946
https://doi.org/10.1115/HT2021-63946
View Paper titled, Effect of Variation of Pin-fin Height on Jet Impingement Heat Transfer on a Rotating Surface
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Topics: Disks, Fins, Heat transfer, Rotating disks, Rotation, Aluminum, Cooling, Gas turbines, Gases, Reynolds number
Journal Articles

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 V. Ekkad
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. February 2022, 14(2): 021012.
Paper No: TSEA-21-1060
https://doi.org/10.1115/1.4051375
Published Online: June 22, 2021
View Article titled, Characterization of Transient Wall Heat Load for a Low NOx Lean Premixed Swirl Stabilized Can Combustor Under Reacting Conditions
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Topics: Combustion chambers, Flames, Heat, Reynolds number, Stress, Transients (Dynamics), Temperature, Nitrogen oxides, Particulate matter, Heat flux
Journal Articles

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

Shoaib Ahmed, Kishore Ranganath Ramakrishnan, Srinath V. Ekkad
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. February 2022, 14(2): 021009.
Paper No: TSEA-21-1160
https://doi.org/10.1115/1.4051371
Published Online: June 18, 2021
View Article titled, Overall Cooling Effectiveness of Effusion Cooled Can Combustor Liner Under Reacting and Non-Reacting Conditions
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Topics: Combustion chambers, Cooling, Flow (Dynamics), Temperature, Coolants
Journal Articles

A Modern Review on Jet Impingement Heat Transfer Methods

Srinath V. Ekkad, Prashant Singh
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technology Review
J. Heat Mass Transfer. June 2021, 143(6): 064001.
Paper No: HT-20-1557
https://doi.org/10.1115/1.4049496
Published Online: April 21, 2021
View Article titled, A Modern Review on Jet Impingement Heat Transfer Methods
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Topics: Heat transfer, Flow (Dynamics), Jets