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Proceedings Papers

A Turbo-Oriented Data-Driven Modification to the Spalart-Allmaras Turbulence Model

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A008, June 13–17, 2022

Paper No: GT2022-80456

DOI: https://doi.org/10.1115/GT2022-80456

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Topics: Turbochargers, Turbulence, Compressors, Rotors, Flow (Dynamics), Corners (Structural elements), NASA, Pressure, Pressure gradient, Separation (Technology)

Proceedings Papers

Investigations of the Unsteady Aerodynamic Characteristics for Intakes at Crosswind

Tommaso Piovesan, Zhang Wenqiang, Mehdi Vahdati, Pavlos K. Zachos

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A009, June 13–17, 2022

Paper No: GT2022-82149

DOI: https://doi.org/10.1115/GT2022-82149

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Topics: Computational fluid dynamics, Ducts, Engineering simulation, Flow (Dynamics), Separation (Technology), Simulation, Stability, Steady state, Unsteady flow, Vibration

Proceedings Papers

Uncertainty Quantification of Computational Flutter Estimates of a Compressor Cascade

Marco Rauseo, Fanzhou Zhao, Mehdi Vahdati, Quentin Rendu

Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A010, June 13–17, 2022

Paper No: GT2022-81935

DOI: https://doi.org/10.1115/GT2022-81935

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Topics: Cascades (Fluid dynamics), Compressors, Flutter (Aerodynamics), Uncertainty quantification, Damping, Flow (Dynamics), Blades, Design, Uncertainty, Aircraft engines

Journal Articles

A Turbo-Oriented Data-Driven Modification to the Spalart–Allmaras Turbulence Model

Xiao He, Fanzhou Zhao, Mehdi Vahdati

J. Turbomach. December 2022, 144(12): 121007.

Paper No: TURBO-22-1148

DOI: https://doi.org/10.1115/1.4055333

Published Online: September 19, 2022

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Topics: Calibration, Cascades (Fluid dynamics), Compressors, Flow (Dynamics), NASA, Pressure, Rotors, Turbulence, Computational fluid dynamics, Corners (Structural elements)

Journal Articles

A Method of Stall and Surge Prediction in Axial Compressors Based on Three-Dimensional Body-Force Model

Hanxuan Zeng, Xinqian Zheng, Mehdi Vahdati

J. Eng. Gas Turbines Power. March 2022, 144(3): 031021.

Paper No: GTP-21-1112

DOI: https://doi.org/10.1115/1.4053103

Published Online: January 4, 2022

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Topics: Blades, Compressors, Flow (Dynamics), Modeling, Surges, Simulation, Pressure

Journal Articles

Effect of Manufacturing Tolerance in Flow Past a Compressor Blade

Venkatesh Suriyanarayanan, Quentin Rendu, Mehdi Vahdati, Loic Salles

J. Turbomach. April 2022, 144(4): 041005.

Paper No: TURBO-19-1105

DOI: https://doi.org/10.1115/1.4052600

Published Online: November 5, 2021

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Topics: Blades, Compressors, Manufacturing, Annulus, Rotors, Flow (Dynamics)

Journal Articles

Detached Eddy Simulation: Recent Development and Application to Compressor Tip Leakage Flow

Xiao He, Fanzhou Zhao, Mehdi Vahdati

J. Turbomach. January 2022, 144(1): 011009.

Paper No: TURBO-21-1145

DOI: https://doi.org/10.1115/1.4052019

Published Online: September 21, 2021

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Topics: Compressors, Delay differential equations, Eddies (Fluid dynamics), Flow (Dynamics), Leakage flows, Reynolds-averaged Navier–Stokes equations, Rotors, Simulation, Turbulence

Proceedings Papers

Detached Eddy Simulation: Recent Development and Application to Compressor Tip Leakage Flow

Xiao He, Fanzhou Zhao, Mehdi Vahdati

Proc. ASME. GT2021, Volume 2C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V02CT34A011, June 7–11, 2021

Paper No: GT2021-59077

DOI: https://doi.org/10.1115/GT2021-59077

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Topics: Compressors, Eddies (Fluid dynamics), Leakage flows, Simulation, Delay differential equations, Turbulence, Flow (Dynamics), Databases, Model development, Physics

Journal Articles

Aerodynamic Loading Considerations of Three-Shaft Engine Compression System During Surge

Jose Moreno, John Dodds, Christopher Sheaf, Fanzhou Zhao, Mehdi Vahdati

J. Turbomach. December 2021, 143(12): 121002.

Paper No: TURBO-20-1362

DOI: https://doi.org/10.1115/1.4051207

Published Online: June 25, 2021

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Topics: Pressure, Surges, Engines, Compressors, Flow (Dynamics), Compression, Transients (Dynamics)

Journal Articles

Uncertainty Quantification of Spalart–Allmaras Turbulence Model Coefficients for Compressor Stall

Xiao He, Fanzhou Zhao, Mehdi Vahdati

J. Turbomach. August 2021, 143(8): 081007.

Paper No: TURBO-20-1356

DOI: https://doi.org/10.1115/1.4050438

Published Online: April 26, 2021

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Topics: Airfoils, Compressors, Flow (Dynamics), Rotors, Turbulence, Uncertainty, Uncertainty quantification, NASA, Separation (Technology)

Journal Articles

Flow Physics During Surge and Recovery of a Multi-Stage High-Speed Compressor

Fanzhou Zhao, John Dodds, Mehdi Vahdati

J. Turbomach. June 2021, 143(6): 061008.

Paper No: TURBO-20-1241

DOI: https://doi.org/10.1115/1.4050240

Published Online: April 8, 2021

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Topics: Compressors, Flow (Dynamics), Surges, Inlet guide vanes, Pressure, Cycles

Journal Articles

Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration

Yaozhi Lu, Bharat Lad, Mehdi Vahdati

J. Eng. Gas Turbines Power. July 2021, 143(7): 071007.

Paper No: GTP-20-1759

DOI: https://doi.org/10.1115/1.4050023

Published Online: March 29, 2021

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Topics: Blades

Proceedings Papers

Aerodynamic Loading Considerations of Three-Shaft Engine Compression System During Surge

Jose Moreno, John Dodds, Christopher Sheaf, Fanzhou Zhao, Mehdi Vahdati

Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A011, September 21–25, 2020

Paper No: GT2020-14305

DOI: https://doi.org/10.1115/GT2020-14305

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Topics: Compression, Engines, Surges, Compressors, Aircraft engines, High pressure (Physics), Pressure, Computation, Computational fluid dynamics, Design

Proceedings Papers

Uncertainty Quantification of Spalart-Allmaras Turbulence Model Coefficients for Compressor Stall

Xiao He, Fanzhou Zhao, Mehdi Vahdati

Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A028, September 21–25, 2020

Paper No: GT2020-15014

DOI: https://doi.org/10.1115/GT2020-15014

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Topics: Compressors, Turbulence, Uncertainty quantification, Uncertainty, Airfoils, Flow (Dynamics), Rotors, Delays, Monte Carlo methods, Navier-Stokes equations

Proceedings Papers

Detecting Nonsynchronous Vibration in Transonic Fans Using Machine Learning Techniques

Yaozhi Lu, Mehdi Vahdati

Proc. ASME. GT2020, Volume 2D: Turbomachinery, V02DT38A002, September 21–25, 2020

Paper No: GT2020-14261

DOI: https://doi.org/10.1115/GT2020-14261

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Topics: Fans, Machine learning, Vibration, Blades, Geometry, Manufacturing, High cycle fatigue, Stress, Switches, Trains

Proceedings Papers

Flow Physics During Surge and Recovery of a Multi-Stage High-Speed Compressor

Fanzhou Zhao, John Dodds, Mehdi Vahdati

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A009, September 21–25, 2020

Paper No: GT2020-14345

DOI: https://doi.org/10.1115/GT2020-14345

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Topics: Compressors, Computational fluid dynamics, Flow (Dynamics), Physics, Surges

Proceedings Papers

Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration

Yaozhi Lu, Bharat Lad, Mehdi Vahdati

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A005, September 21–25, 2020

Paper No: GT2020-14646

DOI: https://doi.org/10.1115/GT2020-14646

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Topics: Blades, Vibration, Geometry, Manufacturing, High cycle fatigue, Stress, Switches, Traveling waves

Proceedings Papers

Numerical Analysis of Flutter in Variable Geometry Compressors

Kentaro Suzuki, Fanzhou Zhao, Mehdi Vahdati

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A028, September 21–25, 2020

Paper No: GT2020-16093

DOI: https://doi.org/10.1115/GT2020-16093

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Topics: Compressors, Flutter (Aerodynamics), Geometry, Numerical analysis, Blades, Computation, Design, Rotors, Aeroelasticity, Clearances (Engineering)

Journal Articles

Deficiencies in the Spalart–Allmaras Turbulence Model for the Prediction of the Stability Boundary in Highly Loaded Compressors

Jose Moreno, John Dodds, Sina Stapelfeldt, Mehdi Vahdati

J. Turbomach. December 2020, 142(12): 121012.

Paper No: TURBO-19-1159

DOI: https://doi.org/10.1115/1.4047784

Published Online: December 2, 2020

View Article

Topics: Boundary layers, Compressors, Eddies (Fluid dynamics), Flow (Dynamics), Modeling, Stability, Turbulence, Viscosity, Pressure

Journal Articles

Impact of Exit Duct Dynamic Response on Compressor Stability

Wenqiang Zhang, Mehdi Vahdati, Fanzhou Zhao

J. Turbomach. November 2020, 142(11): 111006.

Paper No: TURBO-19-1212

DOI: https://doi.org/10.1115/1.4048153

Published Online: October 15, 2020

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Topics: Compressors, Ducts, Flow (Dynamics), Nozzles, Pressure, Reflection, Waves, Stability, Geometry

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Journal citation

NARROW

A Turbo-Oriented Data-Driven Modification to the Spalart-Allmaras Turbulence Model

Investigations of the Unsteady Aerodynamic Characteristics for Intakes at Crosswind

Uncertainty Quantification of Computational Flutter Estimates of a Compressor Cascade

A Turbo-Oriented Data-Driven Modification to the Spalart–Allmaras Turbulence Model

A Method of Stall and Surge Prediction in Axial Compressors Based on Three-Dimensional Body-Force Model

Effect of Manufacturing Tolerance in Flow Past a Compressor Blade

Detached Eddy Simulation: Recent Development and Application to Compressor Tip Leakage Flow

Detached Eddy Simulation: Recent Development and Application to Compressor Tip Leakage Flow

Aerodynamic Loading Considerations of Three-Shaft Engine Compression System During Surge

Uncertainty Quantification of Spalart–Allmaras Turbulence Model Coefficients for Compressor Stall

Flow Physics During Surge and Recovery of a Multi-Stage High-Speed Compressor

Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration

Aerodynamic Loading Considerations of Three-Shaft Engine Compression System During Surge

Uncertainty Quantification of Spalart-Allmaras Turbulence Model Coefficients for Compressor Stall

Detecting Nonsynchronous Vibration in Transonic Fans Using Machine Learning Techniques

Flow Physics During Surge and Recovery of a Multi-Stage High-Speed Compressor

Transonic Fan Blade Redesign Approach to Attenuate Nonsynchronous Vibration

Numerical Analysis of Flutter in Variable Geometry Compressors

Deficiencies in the Spalart–Allmaras Turbulence Model for the Prediction of the Stability Boundary in Highly Loaded Compressors

Impact of Exit Duct Dynamic Response on Compressor Stability

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