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Qingjun Zhao
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Journal Articles

Analyzing Vibrational Energy Flow in Structures with Bolted Pre-load Flange Joints under Harmonic Excitation: Application to Aero-engine Overall Casing Vibration Attenuation

Accepted Manuscript
Yingqun Ma, Qingjun Zhao, Wei Zhao, Weiwei Luo, Xuesen Yang, Sanqun Ren
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust.
Paper No: VIB-24-1293
https://doi.org/10.1115/1.4068280
Published Online: March 21, 2025
View Article titled, Analyzing Vibrational Energy Flow in Structures with Bolted Pre-load Flange Joints under Harmonic Excitation: Application to Aero-engine Overall Casing Vibration Attenuation
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Topics: Aircraft engines, Excitation, Flanges, Flow (Dynamics), Stress, Vibration, Manufacturing, Engines, Plates (structures), Bolted joints
Journal Articles

Experimental Study on Vibration Characteristics of Rotor-Rotor Inter-Shaft Labyrinth Seal Rubbing Faults in a Counter-Rotating Aero-Engine

Zhiliang Wang, Wei Zhao, Yingqun Ma, Sanqun Ren, Xuesen Yang, Qingjun Zhao
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2025, 147(2): 021004.
Paper No: VIB-24-1239
https://doi.org/10.1115/1.4067488
Published Online: January 17, 2025
View Article titled, Experimental Study on Vibration Characteristics of Rotor-Rotor Inter-Shaft Labyrinth Seal Rubbing Faults in a Counter-Rotating Aero-Engine
Open the PDF for Experimental Study on Vibration Characteristics of Rotor-Rotor Inter-Shaft Labyrinth Seal Rubbing Faults in a Counter-Rotating Aero-Engine in another window
Topics: Engines, Rotors, Signals, Vibration, Aircraft engines, Pressure, High pressure (Physics)
Proceedings Papers

Prediction of Lean Blowout Limits for Bluff Body Stabilized Flame Using a Gradient Method of Damköhler Number and Temperature

Xin Jia, Bin Hu, Xiuming Sui, Wen Zeng, Xin Yu, Qingjun Zhao
Proc. ASME. GT2024, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A076, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127015
https://doi.org/10.1115/GT2024-127015
View Paper titled, Prediction of Lean Blowout Limits for Bluff Body Stabilized Flame Using a Gradient Method of Damköhler Number and Temperature
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Topics: Chemiluminescence, Flames, Gradient methods, Temperature
Proceedings Papers

Experimental and Numerical Study of Thermoacoustic Instability Characteristics and Mechanisms of Swirling Flame With Outer Flame

Yuanhong Qi, Bin Hu, Qiang Shi, Sanqun Ren, Wei Zhao, Qingjun Zhao
Proc. ASME. GT2024, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A022, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-123297
https://doi.org/10.1115/GT2024-123297
View Paper titled, Experimental and Numerical Study of Thermoacoustic Instability Characteristics and Mechanisms of Swirling Flame With Outer Flame
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Topics: Chemiluminescence, Combustion, Flames, Swirling flow, Vortices
Proceedings Papers

A Parallel Online Performance Optimization Method for ATR Engines Based on Ensemble Neural Network

Weidong Cai, Wei Zhao, Binbin Liu, Xuesen Yang, Weiwei Luo, Qingjun Zhao
Proc. ASME. GT2024, Volume 4: Controls, Diagnostics, and Instrumentation, V004T05A032, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-127289
https://doi.org/10.1115/GT2024-127289
View Paper titled, A Parallel Online Performance Optimization Method for ATR Engines Based on Ensemble Neural Network
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Topics: Artificial neural networks, Engines, Optimization
Proceedings Papers

Experimental Research on the Lubrication Cooling Performance and Durability of High-Speed Bearings Under Axial Overload Conditions

Yujie Han, Binbin Liu, Wei Zhao, Long Hao, Yingqun Ma, Qingjun Zhao
Proc. ASME. GT2024, Volume 10A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing, V10AT22A023, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-128371
https://doi.org/10.1115/GT2024-128371
View Paper titled, Experimental Research on the Lubrication Cooling Performance and Durability of High-Speed Bearings Under Axial Overload Conditions
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Topics: Bearings, Cooling, Durability, Lubrication, Stress, Temperature
Proceedings Papers

Prediction Method of Off-Design Aerodynamic Parameter Radial Distributions Between Blade Rows in a Multi-Stage Turbine Based on Stage Similarity Characteristics

Xinggao Wang, Wei Zhao, Xiuming Sui, Jian Pu, Qingjun Zhao, Jianzhong Xu
Proc. ASME. GT2024, Volume 12B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing, V12BT30A030, June 24–28, 2024
Publisher: American Society of Mechanical Engineers
Paper No: GT2024-126051
https://doi.org/10.1115/GT2024-126051
View Paper titled, Prediction Method of Off-Design Aerodynamic Parameter Radial Distributions Between Blade Rows in a Multi-Stage Turbine Based on Stage Similarity Characteristics
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Topics: Blades, Design, Equilibrium (Physics), Turbines
Journal Articles

A Shock Loss Reduction Method Using a Concave Suction Side Profile for a Zero Inlet Swirl Turbine Rotor

Qinghui Zhou, Wei Zhao, Xiuming Sui, Qingjun Zhao, Jianzhong Xu
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2022, 144(11): 111010.
Paper No: TURBO-21-1270
https://doi.org/10.1115/1.4055067
Published Online: September 13, 2022
View Article titled, A Shock Loss Reduction Method Using a Concave Suction Side Profile for a Zero Inlet Swirl Turbine Rotor
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Topics: Blades, Flow (Dynamics), Shock (Mechanics), Suction, Turbines, Design, Rotors, Pressure
Journal Articles

Analysis of Instantaneous Vibrational Energy Flow for an Aero-Engine Dual-Rotor–Support–Casing Coupling System

Yingqun Ma, Qingjun Zhao, Kai Zhang, Meng Xu, Wei Zhao
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2020, 142(5): 051011.
Paper No: GTP-19-1618
https://doi.org/10.1115/1.4046418
Published Online: April 29, 2020
View Article titled, Analysis of Instantaneous Vibrational Energy Flow for an Aero-Engine Dual-Rotor–Support–Casing Coupling System
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Topics: Rotors, Vibration, Flow (Dynamics), Aircraft engines
Journal Articles

Investigation of Numerical Evaluation Improvement for Three-Dimensional Infinite Cylindrical Heat Conduction Problems

Te Pi, Kevin Cole, Qingjun Zhao, Wei Zhao
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. April 2020, 142(4): 044501.
Paper No: HT-19-1187
https://doi.org/10.1115/1.4045796
Published Online: February 20, 2020
View Article titled, Investigation of Numerical Evaluation Improvement for Three-Dimensional Infinite Cylindrical Heat Conduction Problems
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Topics: Geometry, Heat conduction, Temperature, Computation, Transients (Dynamics), Computer software
Proceedings Papers

Numerical Investigation on Single-Restricted Swirling Flows in an Innovative Combustor

Bin Hu, JunHua Zhang, AiMing Deng, Wei Zhao, QingJun Zhao
Proc. ASME. GT2018, Volume 4B: Combustion, Fuels, and Emissions, V04BT04A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76000
https://doi.org/10.1115/GT2018-76000
View Paper titled, Numerical Investigation on Single-Restricted Swirling Flows in an Innovative Combustor
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Topics: Combustion chambers, Swirling flow, Flow (Dynamics), Vortices, Design, Gas turbines, Combustion, Emissions, Fuel consumption, Pollution
Proceedings Papers

Towards Predicting Lean Blow-Off Based on Damköhler Number and Practical Reaction Zone

Zhonghao Wang, Bin Hu, Qingjun Zhao, Jianzhong Xu
Proc. ASME. GT2017, Volume 4A: Combustion, Fuels and Emissions, V04AT04A039, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63507
https://doi.org/10.1115/GT2017-63507
View Paper titled, Towards Predicting Lean Blow-Off Based on Damköhler Number and Practical Reaction Zone
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Topics: Chemical reactions, Combustion, Combustion chambers, Computer simulation, Design, Engineering systems and industry applications, Flow (Dynamics), Fuels, Gas turbines, Swirling flow
Proceedings Papers

Numerical Investigation on Loss Mechanism and Performance Improvement for a Zero Inlet Swirl Turbine Rotor

Wei Zhao, Qingjun Zhao, Xiuming Sui, Weiwei Luo, Jianzhong Xu
Proc. ASME. GT2017, Volume 2A: Turbomachinery, V02AT40A004, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63220
https://doi.org/10.1115/GT2017-63220
View Paper titled, Numerical Investigation on Loss Mechanism and Performance Improvement for a Zero Inlet Swirl Turbine Rotor
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Topics: Rotors, Turbines, Blades, Leakage flows, Shock (Mechanics), Airfoils, Coolants, Deflection, Design, Optimization
Proceedings Papers

Investigation on the Reduction of Trailing Edge Shock Losses for a Highly Loaded Transonic Turbine

Wei Zhao, Weiwei Luo, Qingjun Zhao, Jianzhong Xu
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A005, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56131
https://doi.org/10.1115/GT2016-56131
View Paper titled, Investigation on the Reduction of Trailing Edge Shock Losses for a Highly Loaded Transonic Turbine
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Topics: Shock (Mechanics), Turbines, Blades, Pressure, Suction, Chords (Trusses), Computer simulation, Delays, Design, Flow (Dynamics)
Proceedings Papers

Modeling for Tip Clearance Effects on Stall-Onset Condition in Transonic Axial Compressors

Shubo Ye, Qingjun Zhao, Xiaorong Xiang, Guang Xi, Jianzhong Xu
Proc. ASME. GT2016, Volume 2A: Turbomachinery, V02AT37A032, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-57081
https://doi.org/10.1115/GT2016-57081
View Paper titled, Modeling for Tip Clearance Effects on Stall-Onset Condition in Transonic Axial Compressors
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Topics: Clearances (Engineering), Compressors, Modeling, Flow (Dynamics), Blades, Deflection, Momentum, Rotors, Accounting, Computation
Proceedings Papers

Research on the Matching Relationship Between HPT and LPT of One and One-Half Vaneless Contra-Rotating Turbines

Xiao Xu, Qingjun Zhao, Weiwei Luo, Fei Tang, Xiaolei Sun
Proc. ASME. GT2016, Volume 2B: Turbomachinery, V02BT38A008, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56141
https://doi.org/10.1115/GT2016-56141
View Paper titled, Research on the Matching Relationship Between HPT and LPT of One and One-Half Vaneless Contra-Rotating Turbines
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Topics: Turbines, Flow (Dynamics), Engines, Pressure, Cycles, Design, Geometry, High pressure (Physics), Propulsion systems, Thrust
Proceedings Papers

Influence of Hot Streak/Airfoil Count Ratios on High Pressure Stage of a Vaneless Counter-Rotating Turbine

Qingjun Zhao, Huishe Wang, Fei Tang, Xiaolu Zhao, Jianzhong Xu
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1155-1166, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50542
https://doi.org/10.1115/GT2008-50542
View Paper titled, Influence of Hot Streak/Airfoil Count Ratios on High Pressure Stage of a Vaneless Counter-Rotating Turbine
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Topics: Airfoils, High pressure (Physics), Turbines, Rotors, Flow (Dynamics), Temperature, Blades, Buoyancy, Engineering simulation, Fluids
Proceedings Papers

Tip Clearance Effects on Inlet Hot Streaks Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine

Qingjun Zhao, Jianyi Du, Huishe Wang, Xiaolu Zhao, Jianzhong Xu
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1179-1189, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50582
https://doi.org/10.1115/GT2008-50582
View Paper titled, Tip Clearance Effects on Inlet Hot Streaks Migration Characteristics in High Pressure Stage of a Vaneless Counter-Rotating Turbine
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Topics: Clearances (Engineering), High pressure (Physics), Turbines, Rotors, Pressure, Leakage flows, Fluids, Stators, Suction, Temperature
Proceedings Papers

Influence of Hot Streak Temperature Ratio on Low Pressure Stage of a Vaneless Counter-Rotating Turbine

Qingjun Zhao, Fei Tang, Huishe Wang, Jianyi Du, Xiaolu Zhao, Jianzhong Xu
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 469-480, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27028
https://doi.org/10.1115/GT2007-27028
View Paper titled, Influence of Hot Streak Temperature Ratio on Low Pressure Stage of a Vaneless Counter-Rotating Turbine
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Topics: Pressure, Temperature, Turbines, Rotors, Fluids, Flow (Dynamics), High pressure (Physics), Shock waves, Buoyancy, Mach number
Proceedings Papers

Unsteady Numerical Simulation of Shock Systems in Vaneless Counter-Rotating Turbine

Huishe Wang, Qingjun Zhao, Xiaolu Zhao, Jianzhong Xu
Proc. ASME. GT2005, Volume 6: Turbo Expo 2005, Parts A and B, 477-485, June 6–9, 2005
Publisher: American Society of Mechanical Engineers
Paper No: GT2005-68212
https://doi.org/10.1115/GT2005-68212
View Paper titled, Unsteady Numerical Simulation of Shock Systems in Vaneless Counter-Rotating Turbine
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Topics: Computer simulation, Shock (Mechanics), Turbines, Rotors, Mach number, Waves, Wakes, Design, Echoes, Nozzles