A5104805268- Combustion and Detonation Processes
- Fire dynamics and safety research
- Risk and Safety Analysis
- Energetic Materials and Combustion
- Metal Alloys Wear and Properties
- Surface Treatment and Residual Stress
- Metal and Thin Film Mechanics
- Aeroelasticity and Vibration Control
- Metallurgy and Material Forming
- Composite Structure Analysis and Optimization
- Advanced machining processes and optimization
- Combustion and flame dynamics
- Hydraulic and Pneumatic Systems
- Rocket and propulsion systems research
- Experimental and Theoretical Physics Studies
- Electromagnetic Launch and Propulsion Technology
- Welding Techniques and Residual Stresses
- Advanced Surface Polishing Techniques
- Engineering Technology and Methodologies
- Smart Materials for Construction
- Dynamics and Control of Mechanical Systems
- Non-Destructive Testing Techniques
- Fault Detection and Control Systems
- Hydrogen embrittlement and corrosion behaviors in metals
- Bladed Disk Vibration Dynamics
Zhengzhou University
2011-2025
Northwestern Polytechnical University
2019-2024
University of Hong Kong
1999-2024
Tsinghua University
2009
Hong Kong University of Science and Technology
1999-2001
Titanium alloys are widely used in aviation, marine, automotive, offshore, and medical fields. However, their poor wear resistance reduces the safety reliability of components during service. Few study has been previously conducted on enhancement titanium (including Ti–6Al–4V alloy) processed by mechanical cutting. High-speed ultrasonic vibration cutting (HUVC) is an effective approach for improving machinability alloys. In this study, we attempted to utilize HUVC After conducting high-speed...
Due to the complexity and short timescale of detonation, it is usually difficult capture its transient characteristics experimentally. Advanced numerical methods are essential for enhancing understanding flow field structure combustion mechanism detonation. In this study, a density-based compressible reactive solver called CDSFoam developed simulating gas-droplet two-phase detonation based on OpenFOAM. The primary feature implementation two-way coupling between gas liquid phases, utilizing...
The interaction mechanism and suppression methods between the backpropagation oblique shock waves (BOW) from detonation combustion in afterburner flow disturbances with front-end components, remains a major challenge engine coupling. An experimental investigation was systematically conducted based on micro-axial turbine. evolution characteristics of wave system structures pressure variations turbine field under influence BOW were thoroughly examined. Special emphasis placed modulation effect...
Abstract Researches have shown that the use of a continuous detonation afterburner can improve propulsion performance aero engine. However, backpropagation pressure waves (BPW) generated by gain will affect internal flow and turbine. This article simulates BPW through custom function, investigates effects amplitude, rotation frequency, propagation mode on turbine three-dimensional simulation. The results show as amplitude increases, oscillation at each section increases local subcritical...
The trends and future directions of hydrogen safety research cannot be separated from the thermodynamic behavior combustion explosion, spontaneous combustion, flame propagation behavior, mechanisms, other related topics. In this paper, through method numerical simulation, considering detonation characteristics in annular section chamber commonly used gas turbines, form impact channel are evaluated. By discussing deflagration to transition hydrogen/air premixed under different working...
ABSTRACTIn order to realize stable propagation of the ethylene-air rotating detonation wave with less velocity deficit in annular combustion chamber, a series experiments have been carried out while changing combustor width (i.e. 10 mm, 15 25 and hollow combustor), mass flow rate air, equivalence ratio. The air ethylene are supplied into through slot-orifice impinging injection scheme, where is injected slot height 0.5 mm by 160 orifices diameter 0.35 mm. Experimental results indicate that...
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This study experimentally explores the propagation mechanisms of acetylene/air detonation waves within a channel intermittently constrained on one side, utilizing soot foil and high-speed schlieren photography to capture cellular structure shock-flame evolution. The experiments revealed that traverse semi-enclosed with various discrete wall configurations side in four distinct modes: (I) periodic failure re-initiation; (II) single extinction (III) localized (IV) non-extinction. Mode I occurs...