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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

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

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

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

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

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)

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

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

Journal Articles

Uncertainty Quantification of Spalart–Allmaras Turbulence Model Coefficients for Simplified Compressor Flow Features

Xiao He, Fanzhou Zhao, Mehdi Vahdati

J. Fluids Eng. September 2020, 142(9): 091501.

Paper No: FE-19-1810

DOI: https://doi.org/10.1115/1.4047026

Published Online: May 11, 2020

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Topics: Artificial neural networks, Compressors, Flow (Dynamics), Separation (Technology), Shock (Mechanics), Shock waves, Stress, Turbulence, Uncertainty, Uncertainty quantification

Proceedings Papers

Impact of Exit Duct Dynamic Response on Compressor Stability

Wenqiang Zhang, Mehdi Vahdati, Fanzhou Zhao

Proc. ASME. GT2019, Volume 2A: Turbomachinery, V02AT45A012, June 17–21, 2019

Paper No: GT2019-90857

DOI: https://doi.org/10.1115/GT2019-90857

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Topics: Compressors, Ducts, Dynamic response, Stability, Nozzles, Blades, Reflection, Transients (Dynamics), Waves, Acoustics

Journal Articles

Poststall Behavior of a Multistage High Speed Compressor at Off-Design Conditions

Fanzhou Zhao, John Dodds, Mehdi Vahdati

J. Turbomach. December 2018, 140(12): 121002.

Paper No: TURBO-18-1174

DOI: https://doi.org/10.1115/1.4041142

Published Online: October 15, 2018

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Topics: Compressors, Design, Flow (Dynamics), Stators, Surges, Transients (Dynamics), Pressure, Blades, Computational fluid dynamics

Proceedings Papers

Post-Stall Behaviour of a Multi-Stage High Speed Compressor at Off-Design Conditions

Fanzhou Zhao, John Dodds, Mehdi Vahdati

Proc. ASME. GT2018, Volume 2A: Turbomachinery, V02AT45A005, June 11–15, 2018

Paper No: GT2018-75283

DOI: https://doi.org/10.1115/GT2018-75283

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Topics: Compressors, Design, Surges, Blades, Flow (Dynamics), Modeling, Computational fluid dynamics, Computation, Computer simulation, Damage

Proceedings Papers

Aeroelastic Analysis of NREL Wind Turbine

Yaozhi Lu, Fanzhou Zhao, Loic Salles, Mehdi Vahdati

Proc. ASME. GT2017, Volume 9: Oil and Gas Applications; Supercritical CO2 Power Cycles; Wind Energy, V009T49A002, June 26–30, 2017

Paper No: GT2017-63161

DOI: https://doi.org/10.1115/GT2017-63161

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Topics: Wind turbines, High cycle fatigue, Blades, Flow (Dynamics), Computational fluid dynamics, Computer simulation, Unsteady flow, Vibration, Aeroelasticity, Composite materials

Journal Articles

A Simple Model for Identifying the Flutter Bite of Fan Blades

Fanzhou Zhao, Nigel Smith, Mehdi Vahdati

J. Turbomach. July 2017, 139(7): 071003.

Paper No: TURBO-16-1256

DOI: https://doi.org/10.1115/1.4035567

Published Online: February 23, 2017

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Topics: Acoustics, Blades, Flutter (Aerodynamics), Reflection, Waves, Computation, Ducts, Flow (Dynamics), Design

Proceedings Papers

A Simple Model for Identifying the ‘Flutter Bite’ of Fan Blades

Fanzhou Zhao, Nigel Smith, Mehdi Vahdati

Proc. ASME. GT2016, Volume 7B: Structures and Dynamics, V07BT34A004, June 13–17, 2016

Paper No: GT2016-56336

DOI: https://doi.org/10.1115/GT2016-56336

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Topics: Blades, Flutter (Aerodynamics), Design, Acoustics, Engines, Computation, Computational fluid dynamics, Damping, Reflection, Annulus

Journal citation

NARROW

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

Uncertainty Quantification of Computational Flutter Estimates of a Compressor Cascade

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

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

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

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

Numerical Analysis of Flutter in Variable Geometry Compressors

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

Impact of Exit Duct Dynamic Response on Compressor Stability

Uncertainty Quantification of Spalart–Allmaras Turbulence Model Coefficients for Simplified Compressor Flow Features

Impact of Exit Duct Dynamic Response on Compressor Stability

Poststall Behavior of a Multistage High Speed Compressor at Off-Design Conditions

Post-Stall Behaviour of a Multi-Stage High Speed Compressor at Off-Design Conditions

Aeroelastic Analysis of NREL Wind Turbine

A Simple Model for Identifying the Flutter Bite of Fan Blades

A Simple Model for Identifying the ‘Flutter Bite’ of Fan Blades

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