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Nagabhushana Rao Vadlamani
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Proceedings Papers

Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions

Ananth S. M., Massimiliano Nardini, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A039, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127998
https://doi.org/10.1115/GT2024-127998
View Paper titled, Performance of Rough-Ribbed Low-Pressure Turbine Blades Under Varying Loading and Operating Conditions
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Topics: Pressure, Surface roughness, Turbine blades, Design, Skin friction (Fluid dynamics), Blades, Boundary layers, Flow (Dynamics), Turbulence, Bubbles
Journal Articles

Characteristics of Laminar Separation Bubble With Varying Leading-Edge Shapes and Deflections of the Trailing-Edge Flap

Sumit S. Sarvankar, Drik Sarkar, Adrin Issai Arasu, Chetankumar Sureshbhai Mistry, Nagabhushana Rao Vadlamani
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2024, 146(10): 101014.
Paper No: GTP-24-1128
https://doi.org/10.1115/1.4065408
Published Online: May 21, 2024
View Article titled, Characteristics of Laminar Separation Bubble With Varying Leading-Edge Shapes and Deflections of the Trailing-Edge Flap
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Topics: Bubbles, Flow (Dynamics), Separation (Technology), Simulation, Engineering simulation, Deflection, Flat plates, Shapes, Large eddy simulation, Reynolds-averaged Navier–Stokes equations
Proceedings Papers

Characteristics of Laminar Separation Bubble With Varying Leading-Edge Shapes and Deflections of the Trailing-Edge Flap

Sumit S. Sarvankar, Drik Sarkar, Chetankumar Sureshbhai Mistry, Nagabhushana Rao Vadlamani
Proc. ASME. GTINDIA2023, ASME 2023 Gas Turbine India Conference, V001T02A005, December 7–8, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2023-118416
https://doi.org/10.1115/GTINDIA2023-118416
View Paper titled, Characteristics of Laminar Separation Bubble With Varying Leading-Edge Shapes and Deflections of the Trailing-Edge Flap
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Topics: Bubbles, Deflection, Large eddy simulation, Separation (Technology), Shapes
Journal Articles

Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades

S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2024, 146(3): 031012.
Paper No: TURBO-23-1250
https://doi.org/10.1115/1.4064087
Published Online: December 14, 2023
View Article titled, Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades
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Topics: Blades, Boundary layers, Dimensions, Flow (Dynamics), Surface roughness, Turbulence, Turbine blades, Skin friction (Fluid dynamics), Simulation, Pressure gradient
Proceedings Papers

Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades

S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Melissa Kozul, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Proc. ASME. GT2023, Volume 13B: Turbomachinery — Axial Flow Turbine Aerodynamics, V13BT30A036, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103536
https://doi.org/10.1115/GT2023-103536
View Paper titled, Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades
Open the PDF for Effects of Riblet Dimensions on the Transitional Boundary Layers Over High-Lift Turbine Blades in another window
Topics: Boundary layers, Dimensions, Turbine blades, Surface roughness, Blades, Skin friction (Fluid dynamics), Bubbles, Drag (Fluid dynamics), Flow (Dynamics), Separation (Technology)
Journal Articles

Aerothermal Performance of Axially Varying Winglet-Squealer Blade Tips

Anmol Garg, Nagabhushana Rao Vadlamani, Balaji Srinivasan
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071009.
Paper No: TURBO-22-1134
https://doi.org/10.1115/1.4056712
Published Online: February 10, 2023
View Article titled, Aerothermal Performance of Axially Varying Winglet-Squealer Blade Tips
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Topics: Blades, Cavities, Flow (Dynamics), Pressure, Design, Leakage, Vortices, Leakage flows, High pressure (Physics)
Proceedings Papers

Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces

S. M. Ananth, Massimiliano Nardini, Aditya Vaid, Richard D. Sandberg, Nagabhushana Rao Vadlamani
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A026, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82558
https://doi.org/10.1115/GT2022-82558
View Paper titled, Profile Loss Reduction of High Lift Turbine Blades With Rough and Ribbed Surfaces
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Topics: Surface roughness, Turbine blades, Blades, Turbulence, Boundary layers, Pressure gradient, Separation (Technology), Suction, Boundary layer turbulence, Bubbles
Proceedings Papers

Aerothermal Performance of Axially Varying Winglet-Squealer Blade Tips

Anmol Garg, Nagabhushana Rao Vadlamani, Balaji Srinivasan
Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A030, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82947
https://doi.org/10.1115/GT2022-82947
View Paper titled, Aerothermal Performance of Axially Varying Winglet-Squealer Blade Tips
Open the PDF for Aerothermal Performance of Axially Varying Winglet-Squealer Blade Tips in another window
Topics: Blades, Design, Pressure, Cavities, Accounting, Dynamics (Mechanics), Flow (Dynamics), Fluid dynamics, Heat, High pressure (Physics)
Proceedings Papers

Crosswind Aerodynamic Analysis Using Quasi 3D Ducts

Sumit Shankar Sarvankar, Adrin Issai Arasu, Nagabhushana Rao Vadlamani
Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A018, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82964
https://doi.org/10.1115/GT2022-82964
View Paper titled, Crosswind Aerodynamic Analysis Using Quasi 3D Ducts
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Topics: Ducts, Plasmas (Ionized gases), Separation (Technology), Actuators, Aerodynamics, Boundary layers, Computer simulation, Design, Flow (Dynamics), Flow control
Journal Articles

Profile Loss Reduction of High-Lift Turbine Blades With Rough and Ribbed Surfaces

Ananth Sivaramakrishnan Malathi, Massimiliano Nardini, Aditya Vaid, Nagabhushana Rao Vadlamani, Richard D. Sandberg
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021001.
Paper No: TURBO-22-1214
https://doi.org/10.1115/1.4055501
Published Online: October 11, 2022
View Article titled, Profile Loss Reduction of High-Lift Turbine Blades With Rough and Ribbed Surfaces
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Topics: Boundary layers, Flow (Dynamics), Pressure gradient, Suction, Surface roughness, Turbulence, Simulation, Skin friction (Fluid dynamics), Turbine blades, Shapes
Proceedings Papers

Inverse Design of Airfoils Using Convolutional Neural Network and Deep Neural Network

Amit Kumar, Nagabhushana Rao Vadlamani
Proc. ASME. GTINDIA2021, ASME 2021 Gas Turbine India Conference, V001T02A001, December 2–3, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2021-74765
https://doi.org/10.1115/GTINDIA2021-74765
View Paper titled, Inverse Design of Airfoils Using Convolutional Neural Network and Deep Neural Network
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Topics: Airfoils, Artificial neural networks, Design, Shapes, Pressure, Errors
Proceedings Papers

Modelling Wall-Pressure Spectra in Turbulent Boundary Layers Using Neural Networks

Akash Haridas, Nagabhushana Rao Vadlamani
Proc. ASME. GTINDIA2021, ASME 2021 Gas Turbine India Conference, V001T02A006, December 2–3, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2021-76301
https://doi.org/10.1115/GTINDIA2021-76301
View Paper titled, Modelling Wall-Pressure Spectra in Turbulent Boundary Layers Using Neural Networks
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Topics: Artificial neural networks, Boundary layer turbulence, Modeling, Pressure, Spectra (Spectroscopy), Compressibility, Fluctuations (Physics), Pressure gradient
Journal Articles

Toward Future Installations: Mutual Interactions of Short Intakes With Modern High Bypass Fans

Nagabhushana Rao Vadlamani, Teng Cao, Rob Watson, Paul G. Tucker
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. August 2019, 141(8): 081013.
Paper No: TURBO-19-1024
https://doi.org/10.1115/1.4044080
Published Online: July 26, 2019
View Article titled, Toward Future Installations: Mutual Interactions of Short Intakes With Modern High Bypass Fans
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Topics: Blades, Design, Flow (Dynamics), Pressure, Rotors, Separation (Technology), Shock (Mechanics), Simulation, Mach number, Engines
Journal Articles

Comparative Studies of RANS Versus Large Eddy Simulation for Fan–Intake Interaction

Yunfei Ma, Nagabhushana Rao Vadlamani, Jiahuan Cui, Paul Tucker
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. March 2019, 141(3): 031106.
Paper No: FE-18-1286
https://doi.org/10.1115/1.4041393
Published Online: October 5, 2018
View Article titled, Comparative Studies of RANS Versus Large Eddy Simulation for Fan–Intake Interaction
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Topics: Flow (Dynamics), Large eddy simulation, Reynolds-averaged Navier–Stokes equations, Turbulence, Separation (Technology), Generators, Simulation, Rotors
Proceedings Papers

A Mixed-Fidelity Numerical Study for Fan-Distortion Interaction

Yunfei Ma, Jiahuan Cui, Nagabhushana Rao Vadlamani, Paul G. Tucker
Proc. ASME. GT2018, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75090
https://doi.org/10.1115/GT2018-75090
View Paper titled, A Mixed-Fidelity Numerical Study for Fan-Distortion Interaction
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Topics: Computational fluid dynamics, Design, Eddies (Fluid dynamics), Flow (Dynamics), Geometry, Large eddy simulation, Pressure, Rotors, Separation (Technology), Simulation
Journal Articles

A Mixed-Fidelity Numerical Study for Fan–Distortion Interaction

Yunfei Ma, Jiahuan Cui, Nagabhushana Rao Vadlamani, Paul Tucker
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. September 2018, 140(9): 091003.
Paper No: TURBO-18-1136
https://doi.org/10.1115/1.4040860
Published Online: August 20, 2018
View Article titled, A Mixed-Fidelity Numerical Study for Fan–Distortion Interaction
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Topics: Blades, Flow (Dynamics), Geometry, Pressure, Rotors, Separation (Technology), Design, Simulation, Generators, Modeling
Proceedings Papers

Improved Hierarchical Modelling for Aerodynamically Coupled Systems

Rob Watson, Jiahuan Cui, Yunfei Ma, James Tyacke, Nagabhushana Rao Vadlamani, Mohammed F. Alam, Yushuang Dai, Paul G. Tucker, Teng Cao, Paul Hield, Mark Wilson, Kevin Menzies, Christopher Sheaf
Proc. ASME. GT2017, Volume 2B: Turbomachinery, V02BT41A056, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-65223
https://doi.org/10.1115/GT2017-65223
View Paper titled, Improved Hierarchical Modelling for Aerodynamically Coupled Systems
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Topics: Modeling, Geometry, Simulation, Aircraft engines, Blades, Compressors, Computation, Cross-flow, Cycles, Diffusers
Journal Articles

Fan–Intake Interaction Under High Incidence

Teng Cao, Nagabhushana Rao Vadlamani, Paul G. Tucker, Angus R. Smith, Michal Slaby, Christopher T. J. Sheaf
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2017, 139(4): 041204.
Paper No: GTP-16-1336
https://doi.org/10.1115/1.4034701
Published Online: November 2, 2016
View Article titled, Fan–Intake Interaction Under High Incidence
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Topics: Design, Flow (Dynamics), Mach number, Separation (Technology), Reynolds-averaged Navier–Stokes equations, Pressure, Simulation, Computational fluid dynamics
Proceedings Papers

Fan-Intake Interaction Under High Incidence

Teng Cao, Nagabhushana Rao Vadlamani, Paul G. Tucker, Angus R. Smith, Michal Slaby, Christopher T. J. Sheaf
Proc. ASME. GT2016, Volume 1: Aircraft Engine; Fans and Blowers; Marine, V001T01A014, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56561
https://doi.org/10.1115/GT2016-56561
View Paper titled, Fan-Intake Interaction Under High Incidence
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Topics: Computer simulation, Delays, Design, Flow (Dynamics), Geometry, Mach number, Reynolds-averaged Navier–Stokes equations, Separation (Technology), Turbofans
Proceedings Papers

LES for Turbines: Methodologies, Cost and Future Outlooks

James Tyacke, Paul Tucker, Richard Jefferson-Loveday, Nagabhushana Rao Vadlamani, Robert Watson, Iftekhar Naqavi, Xiaoyu Yang
Proc. ASME. GT2013, Volume 6B: Turbomachinery, V06BT37A007, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94416
https://doi.org/10.1115/GT2013-94416
View Paper titled, LES for Turbines: Methodologies, Cost and Future Outlooks
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Topics: Turbines, Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Physics, Cooling, Design, Ducts, Eddies (Fluid dynamics), High pressure (Physics), Large eddy simulation