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Ge-Cheng Zha
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Journal Articles

Full-Annulus Simulation of Nonsynchronous Blade Vibration Excitation of an Axial Compressor

Daniel Espinal, Hong-Sik Im, Ge-Cheng Zha
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. March 2018, 140(3): 031008.
Paper No: TURBO-16-1261
DOI: https://doi.org/10.1115/1.4038337
Published Online: December 27, 2017
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Topics: Annulus, Blades, Compressors, Excitation, Flow (Dynamics), Rotors, Simulation, Stators, Pressure, Vibration
Proceedings Papers

Numerical Examination of Lock-In Hypothesis of Non-Synchronous Vibration in an Axial Compressor

Jiaye Gan, Hong-Sik Im, Ge-Cheng Zha
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A025, June 26–30, 2017
Paper No: GT2017-65244
DOI: https://doi.org/10.1115/GT2017-65244
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Topics: Compressors, Locks (Waterways), Vibration, Blades, Flow (Dynamics), Excitation, Simulation, Structural response analysis, Annulus, Diffusion (Physics)
Proceedings Papers

Delayed Detached Eddy Simulation of Rotating Stall for a Full Annulus Transonic Axial Compressor Stage

Jiaye Gan, Hong-Sik Im, Ge-Cheng Zha
Proc. ASME. GT2016, Volume 2A: Turbomachinery, V02AT37A051, June 13–17, 2016
Paper No: GT2016-57985
DOI: https://doi.org/10.1115/GT2016-57985
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Topics: Annulus, Compressors, Eddies (Fluid dynamics), Simulation, Rotors, Stall inception, Delay differential equations, Stators, Blades, Boundary-value problems
Proceedings Papers

High Fidelity Simulation of Safety Relief Valve Internal Flows

Yunchao Yang, Alexis Lefebvre, Ge-Cheng Zha, Qing-Feng Liu, Jun Fan, Dianjing Chen, Yuzhen Wu
Proc. ASME. PVP2015, Volume 2: Computer Technology and Bolted Joints, V002T02A016, July 19–23, 2015
Paper No: PVP2015-45588
DOI: https://doi.org/10.1115/PVP2015-45588
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Topics: Internal flow, Relief valves, Safety, Simulation, Flow (Dynamics), Pressure, Errors, Geometry, Waves, Air flow
Proceedings Papers

Investigation of a Compressor Rotor Non-Synchronous Vibration With and Without Fluid-Structure Interaction

Jiaye Gan, Hong-sik Im, Daniel Espinal, Alexis Lefebvre, Ge-Cheng Zha
Proc. ASME. GT2014, Volume 7B: Structures and Dynamics, V07BT35A018, June 16–20, 2014
Paper No: GT2014-26478
DOI: https://doi.org/10.1115/GT2014-26478
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Topics: Compressors, Fluid structure interaction, Rotors, Vibration, Blades, Simulation, Vortices, Excitation, Stators, Annulus
Journal Articles

Delayed Detached Eddy Simulation of Airfoil Stall Flows Using High-Order Schemes

Hong-Sik Im, Ge-Cheng Zha
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. November 2014, 136(11): 111104.
Paper No: FE-13-1122
DOI: https://doi.org/10.1115/1.4027813
Published Online: September 4, 2014
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Topics: Airfoils, Boundary layers, Delay differential equations, Drag (Fluid dynamics), Eddies (Fluid dynamics), Flow (Dynamics), Simulation, Flat plates, Reynolds-averaged Navier–Stokes equations
Proceedings Papers

Flutter Prediction of a Transonic Fan With Travelling Wave Using Fully Coupled Fluid/Structure Interaction

Hong-Sik Im, Ge-Cheng Zha
Proc. ASME. GT2013, Volume 7B: Structures and Dynamics, V07BT33A003, June 3–7, 2013
Paper No: GT2013-94341
DOI: https://doi.org/10.1115/GT2013-94341
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Topics: Fluid structure interaction, Flutter (Aerodynamics), Traveling waves, Blades, Shock (Mechanics), Engineering simulation, Simulation, Annulus, Boundary-value problems, Chords (Trusses)
Journal Articles

Large Eddy Simulation of Coflow Jet Airfoil at High Angle of Attack

Hong-Sik Im, Ge-Cheng Zha, Bertrand P. E. Dano
Journal: Journal of Fluids Engineering
Article Type: Research-Article
J. Fluids Eng. February 2014, 136(2): 021101.
Paper No: FE-13-1240
DOI: https://doi.org/10.1115/1.4025649
Published Online: November 12, 2013
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Topics: Airfoils, Flow (Dynamics), Drag (Fluid dynamics), Momentum
Proceedings Papers

Effects of Rotor Tip Clearance on Tip Clearance Flow Potentially Leading to NSV in an Axial Compressor

Hong-Sik Im, Ge-Cheng Zha
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1383-1394, June 11–15, 2012
Paper No: GT2012-68148
DOI: https://doi.org/10.1115/GT2012-68148
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Topics: Clearances (Engineering), Compressors, Flow (Dynamics), Rotors, Wake turbulence, Annulus, Blades, Boundary-value problems, Computer simulation, Leakage flows
Proceedings Papers

Simulation of Non-Synchronous Blade Vibration of an Axial Compressor Using a Fully Coupled Fluid/Structure Interaction

Hong-Sik Im, Ge-Cheng Zha
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1395-1407, June 11–15, 2012
Paper No: GT2012-68150
DOI: https://doi.org/10.1115/GT2012-68150
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Topics: Blades, Compressors, Fluid structure interaction, Simulation, Vibration, Rotors, Boundary-value problems, Stators, Annulus, Engines
Proceedings Papers

Detached Eddy Simulation of Unsteady Stall Flows of a Full Annulus Transonic Rotor

Hong-Sik Im, Xiangying Chen, Ge-Cheng Zha
Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 2627-2642, June 14–18, 2010
Paper No: GT2010-23465
DOI: https://doi.org/10.1115/GT2010-23465
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Topics: Annulus, Eddies (Fluid dynamics), Flow (Dynamics), Rotors, Simulation, Blades, Delay differential equations, Pressure, Axial flow, Clearances (Engineering)