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Journal Articles

Validation of a Two-Phase CFD Air/Mist Film Cooling Model With Experimental Details—Part I: Development of an Experimental Test Facility

Ting Wang, Lei Zhao, Ramy Abdelmaksoud
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. November 2022, 14(11): 111009.
Paper No: TSEA-21-1638
DOI: https://doi.org/10.1115/1.4054624
Published Online: June 15, 2022
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Topics: Cooling, Drops, Film cooling, Flow (Dynamics), Particulate matter, Temperature, Water, Thermocouples, Test facilities, Uncertainty
Journal Articles

Validation of a Two-Phase CFD Air/Mist Film Cooling Model With Experimental Details—Part II: Computational Model Validation

Ramy Abdelmaksoud, Ting Wang, Lei Zhao
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. November 2022, 14(11): 111010.
Paper No: TSEA-21-1639
DOI: https://doi.org/10.1115/1.4054625
Published Online: June 15, 2022
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Topics: Computational fluid dynamics, Cooling, Drops, Film cooling, Heat transfer, Temperature, Particulate matter, Computer simulation
Journal Articles

Hydrodynamics Modeling of a Piezoelectric Micro-Robotic Fish With Double Caudal Fins

Quanliang Zhao, Jinghao Chen, Hongkuan Zhang, Zhonghai Zhang, Zhikai Liu, Shiqi Liu, Jiejian Di, Guangping He, Lei Zhao, Mengying Zhang, Tingting Su, Xu Liang
Journal: Journal of Mechanisms and Robotics
Article Type: Technical Briefs
J. Mechanisms Robotics. June 2022, 14(3): 034502.
Paper No: JMR-21-1336
DOI: https://doi.org/10.1115/1.4052973
Published Online: December 8, 2021
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Topics: Fins, Hydrodynamics, Robotics
Proceedings Papers

Analysis and Research on Sodium Single Droplet Combustion

Lei Zhao
Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T12A020, August 4–6, 2021
Paper No: ICONE28-64402
DOI: https://doi.org/10.1115/ICONE28-64402
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Topics: Combustion, Drops, Sodium, Fire, Sodium fast reactors, Oxygen, Absorption, Accidents, Chemical properties, Chemical reactions
Proceedings Papers

Influence of Blade Tip Fillet Structure on Aerodynamic Performance of a Compressor Rotor

Haohao Wang, Lei Zhao, Limin Gao, Yongzeng Li, Chi Ma
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A064, September 21–25, 2020
Paper No: GT2020-16002
DOI: https://doi.org/10.1115/GT2020-16002
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Topics: Blades, Compressors, Rotors, Vortices, Leakage flows, Separation (Technology), Leakage, Pressure, Clearances (Engineering), Computer simulation
Proceedings Papers

Effect of Constraint Induced by Specimen Geometries on Crack Growth Behavior Under Creep-Fatigue Interaction

Lei Zhao, Lianyong Xu
Proc. ASME. PVP2018, Volume 6A: Materials and Fabrication, V06AT06A017, July 15–20, 2018
Paper No: PVP2018-84816
DOI: https://doi.org/10.1115/PVP2018-84816
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Topics: Creep, Fatigue, Fracture (Materials), Damage, Tension, Fatigue damage, Finite element methods, Fracture mechanics, Geometry, High temperature
Proceedings Papers

Finite Element Analysis of AMB Eddy-Current Loss in HTR-PM Primary Helium Circulator

Jinpeng Yu, Yan Zhou, Mo Ni, Guojun Yang, Lei Zhao
Proc. ASME. ICONE26, Volume 2: Plant Systems, Structures, Components, and Materials; Risk Assessments and Management, V002T03A015, July 22–26, 2018
Paper No: ICONE26-81375
DOI: https://doi.org/10.1115/ICONE26-81375
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Topics: Eddies (Fluid dynamics), Eddy currents (Electricity), Finite element analysis, Helium, Magnetic fields, Rotors, Electromagnetic force, Torque, Magnetic bearings, Rotation
Proceedings Papers

The Influence of Thermal Deformation on the Dynamic Characteristics of AMB Rotor of HTR-PM Helium Blower

Guowei Du, Jinpeng Yu, Hong Wang, Lei Zhao
Proc. ASME. ICONE26, Volume 2: Plant Systems, Structures, Components, and Materials; Risk Assessments and Management, V002T03A004, July 22–26, 2018
Paper No: ICONE26-81132
DOI: https://doi.org/10.1115/ICONE26-81132
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Topics: Helium, Rotors, Thermal deformation, Temperature, Bearings, Computer simulation, Damping, Displacement, Electromagnetic force, Engines
Proceedings Papers

Internal Vibration Source Analysis of AMB-Rotor System in HTR-PM Primary Helium Circulator

Jinpeng Yu, Lei Zhao
Proc. ASME. ICONE26, Volume 1: Operations and Maintenance, Engineering, Modifications, Life Extension, Life Cycle, and Balance of Plant; Instrumentation and Control (I&C) and Influence of Human Factors; Innovative Nuclear Power Plant Design and SMRs, V001T04A008, July 22–26, 2018
Paper No: ICONE26-81339
DOI: https://doi.org/10.1115/ICONE26-81339
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Topics: Helium, Rotors, Vibration, Anisotropy, Errors, Accuracy and precision, Displacement measurement, Sensors, Displacement, Feedback
Proceedings Papers

Contact Line Dynamics of Water Droplets Spreading on Nano-Structured Teflon Surfaces in Dropwise Condensation

Lei Zhao, Jiangtao Cheng
Proc. ASME. HT2017, Volume 2: Heat Transfer Equipment; Heat Transfer in Multiphase Systems; Heat Transfer Under Extreme Conditions; Nanoscale Transport Phenomena; Theory and Fundamental Research in Heat Transfer; Thermophysical Properties; Transport Phenomena in Materials Processing and Manufacturing, V002T14A008, July 9–12, 2017
Paper No: HT2017-4814
DOI: https://doi.org/10.1115/HT2017-4814
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Topics: Condensation, Drops, Dynamics (Mechanics), Water, Columns (Structural), Damping, Displacement, Energy dissipation, Friction, Glass transition
Proceedings Papers

The Research of SFR Aerosol Deposition Behavior in Ventilation Ducts

Lei Zhao, Lixia Ren, Wenjun Hu, Shirui Li
Proc. ASME. ICONE25, Volume 5: Advanced and Next Generation Reactors, Fusion Technology; Codes, Standards, Conformity Assessment, Licensing, and Regulatory Issues, V005T05A016, July 2–6, 2017
Paper No: ICONE25-66384
DOI: https://doi.org/10.1115/ICONE25-66384
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Topics: Aerosols, Ducts, Sodium fast reactors, Ventilation, Particulate matter, Agglomeration (Materials), Emergencies, Sodium, Turbulence, Channel flow
Journal Articles

Dynamic Analysis for the Rotor Drop Process and Its Application to a Vertically Levitated Rotor/Active Magnetic Bearing System

Yulan Zhao, Guojun Yang, Patrick Keogh, Lei Zhao
Journal: Journal of Tribology
Article Type: Research-Article
J. Tribol. July 2017, 139(4): 041701.
Paper No: TRIB-16-1131
DOI: https://doi.org/10.1115/1.4035343
Published Online: April 4, 2017
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Topics: Bearings, Rotors, Friction
Proceedings Papers

Molecular Dynamics Study of Contact Line Dynamics of Water Droplets on PTFE Surfaces

Lei Zhao, Jiangtao Cheng
Proc. ASME. IMECE2016, Volume 7: Fluids Engineering, V007T09A049, November 11–17, 2016
Paper No: IMECE2016-65941
DOI: https://doi.org/10.1115/IMECE2016-65941
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Topics: Drops, Dynamics (Mechanics), Molecular dynamics, Water, Wetting, Hydrodynamics, Deformation, Dimensionless numbers, Extruding, Fittings
Journal Articles

On the Ideal Grid Resolution for Two-Dimensional Eulerian Modeling of Gas–Liquid Flows

Robert Picardi, Lei Zhao, Francine Battaglia
Journal: Journal of Fluids Engineering
Article Type: Technical Briefs
J. Fluids Eng. November 2016, 138(11): 114503.
Paper No: FE-16-1017
DOI: https://doi.org/10.1115/1.4033561
Published Online: July 15, 2016
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Topics: Bubbles, Flow (Dynamics), Modeling, Resolution (Optics), Simulation, Engineering simulation, Computational fluid dynamics
Journal Articles

Thermal Analysis and Simulation of Auxiliary Bearings and Its Application in the High Temperature Reactor-10

Yulan Zhao, Guojun Yang, Zhengang Shi, Lei Zhao
Journal: Journal of Tribology
Article Type: Research-Article
J. Tribol. January 2016, 138(1): 011102.
Paper No: TRIB-14-1307
DOI: https://doi.org/10.1115/1.4031003
Published Online: August 14, 2015
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Topics: Bearings, Friction, Heat, Rotors, Temperature, Ceramics, Thermal analysis
Proceedings Papers

Thermal Growth Simulations of the Rotor and Auxiliary Bearing Contact Events

Yulan Zhao, Guojun Yang, Zhengang Shi, Lei Zhao
Proc. ASME. ICONE22, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Plant Systems, Structures and Components; Codes, Standards, Licensing and Regulatory Issues, V001T03A001, July 7–11, 2014
Paper No: ICONE22-30053
DOI: https://doi.org/10.1115/ICONE22-30053
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Topics: Bearings, Engineering simulation, Rotors, Simulation, Temperature, Heat, Failure, Heat transfer, Ball bearings, Ceramics
Proceedings Papers

Fault Diagnosis of Rolling Bearings Based on Multi-Scale Entropy and Ensembled Artificial Neural Network

Fen Chen, Quan Liu, Qin Wei, Deng Ting, Yan Ting, Su Wenqin, Peng Bingjie, Lei Zhao
Proc. ASME. MSEC2014, Volume 2: Processing, V002T02A041, June 9–13, 2014
Paper No: MSEC2014-4033
DOI: https://doi.org/10.1115/MSEC2014-4033
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Topics: Artificial neural networks, Entropy, Fault diagnosis, Rolling bearings, Cycles, Feature extraction, Flaw detection, Machinery, Reliability, Time series
Proceedings Papers

Feature Extraction of Rolling Bearing Fault Based on Ensemble Empirical Mode Decomposition and Correlation Dimension

Lei Zhao, Zude Zhou, Yang Yin, Rong Chen, Quan Liu, Qin Wei
Proc. ASME. MSEC2014, Volume 2: Processing, V002T02A043, June 9–13, 2014
Paper No: MSEC2014-4070
DOI: https://doi.org/10.1115/MSEC2014-4070
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Topics: Dimensions, Feature extraction, Rolling bearings, Machinery, Noise (Sound), Signals, Algorithms, Attractors, Cycles, Fault diagnosis
Journal Articles

An Experimental Study of Mist/Air Film Cooling on a Flat Plate With Application to Gas Turbine Airfoils—Part I: Heat Transfer

Lei Zhao, Ting Wang
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. July 2014, 136(7): 071006.
Paper No: TURBO-13-1189
DOI: https://doi.org/10.1115/1.4025736
Published Online: January 2, 2014
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Topics: Coolants, Cooling, Film cooling, Gas turbines, Flow (Dynamics), Heat transfer, Drops, Temperature
Journal Articles

An Experimental Study of Mist/Air Film Cooling On a Flat Plate With Application to Gas Turbine Airfoils—Part II: Two-Phase Flow Measurements and Droplet Dynamics

Lei Zhao, Ting Wang
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. July 2014, 136(7): 071007.
Paper No: TURBO-13-1190
DOI: https://doi.org/10.1115/1.4025738
Published Online: January 2, 2014
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Topics: Drops, Particulate matter, Coolants