A5021830747- Fluid Dynamics Simulations and Interactions
- Fluid Dynamics and Heat Transfer
- Toxic Organic Pollutants Impact
- Analytical Chemistry and Chromatography
- Laser-Plasma Interactions and Diagnostics
- Composite Structure Analysis and Optimization
- Pulsed Power Technology Applications
- High-Velocity Impact and Material Behavior
- Mass Spectrometry Techniques and Applications
- Metal and Thin Film Mechanics
- Engineering Structural Analysis Methods
- Hydrogels: synthesis, properties, applications
- Advanced Polymer Synthesis and Characterization
- Belt Conveyor Systems Engineering
- Geotechnical and Geomechanical Engineering
- Mechanical stress and fatigue analysis
- Advanced Battery Materials and Technologies
- Effects and risks of endocrine disrupting chemicals
- Coastal and Marine Dynamics
- Photopolymerization techniques and applications
- Tribology and Wear Analysis
- Tunneling and Rock Mechanics
- Phase Change Materials Research
- Polysaccharides Composition and Applications
- Mechanical Engineering and Vibrations Research
Northeast Agricultural University
2024
Shenyang Institute of Automation
2023
State Key Laboratory of Robotics
2023
Chinese Academy of Sciences
2000-2023
Dalian University of Technology
2012-2022
Liaoning Technical University
2014-2021
Dalian Institute of Chemical Physics
2000-2021
Dalian National Laboratory for Clean Energy
2021
Shandong University of Science and Technology
2019-2021
Dalian University
2012-2015
We investigate cavity collapse regimes behind high-speed projectiles entering the water. Using numerical simulations, we confirmed two different phenomena: deep pinch-off and consecutive collapse. performed a theoretical analysis to develop relationship between projectile motion evolution. found that acceleration is most significant factor determining initial There critical direction of at location pinch-off. The pressure field obviously affected by increase in induced surface accelerates...
The thermo-mechanical behavior and material design of functionally graded materials (FGMs) has been gaining increasing attention in the past two decades. However, little work can obtain exact solution FGM vessel consisting a finite length hollow cylinder closed ends due to difficult calculating axial strain. By constructing an exponentially function determining properties based on steady state thermo-elastic theory Euler-Cauchy formula, closed-form analytical solutions stresses for subjected...
This paper describes an experimental investigation of the cavity evolution and shedding wake behind a hydrophobic sphere during water-entry process. Two distinct phenomena are confirmed by varying impact velocity size: regular air-bubble unstable air-cloud shedding. Both these modes highly dependent on Weber Bond numbers. Under mode, approximately periodic big bubble low-frequency oscillation signals observed. The relationship between events corresponding acoustic is derived, empirical...
In this paper, we conduct an experimental study on the cavity evolution behind a hydrophobic sphere entering water. It is found that there correlation between splash and evolution. Two dominant regimes for pinch-off, including hydrostatic pressure pulsation inside cavity, are confirmed. When removed by guard, pinch-off dominated pressure. The theoretical model well consistent with results, profile dimensionless depth. However, when domes, solution fails increase in effect of closed cavity....
Pressure vessels covered with overlaying layer or coating are widely applied due to its strong heat resistance, corrosion and load-carrying capacity. However, limited work has been reported on investigating the thermomechanical behavior of a pressure vessel functionally graded material (FGM) coating. In this study, closed-form analytical solution was first derived for calculating stress distribution in an FGM subjected internal thermal load. Afterwards, numerical also established validating...
Abstract High-intensity pulsed ion beam (HIPIB) technology is developed as an advanced manufacturing method for components with improved wear, corrosion and/or fatigue performance, etc. Robust HIPIB equipment stable repetitive operation, long-lifetime, and easy maintenance are desired industrial applications, on which stability of parameters critical to achieve consistent result reproducibility. Here, magnetically insulated diodes (MIDs) source durable graphite anode investigated in a simple...
A mathematical model for the acoustic pressure field induced by an enclosed cavity upon a solid sphere impacting into water is established. The relation between sound emission, ripples, and falling elaborated analytically. To describe domain above sphere, physical co-moving cylindrical coordinate systems are introduced. analyzed perturbation method potential flow theory. air inside assumed to be uniform adiabatic. In coordinates, zeroth-order surface governed Rayleigh–Plesset Equation...
Abstract The paper presents the results of a study on propagation and focusing high-intensity pulsed ion beams, produced by self-magnetically insulated diode semi-cylindrical geometry at TEMP-6 accelerator (120 ns, 200–250 kV). We examined space-charge neutralization beam, energy density in focus, divergence its shot-to-shot displacement focal plane. It is found that concentration low-energy electrons beam 1.3–1.5 times higher than ions. observed additional own space charge. With an increase...
Under the background of "double carbon", how to reduce carbon emissions is widely concerned by all walks life. The purpose project predict and analyze contribution development new energy vehicles in China reduction traffic using data provided official organizations such as National Bureau Statistics on vehicles. grey forecast method used quarterly increase each factor. following two machine learning techniques (support vector ridge regression) were used. Analyze compare accuracy models...
This study explores the phenomenon of cavity fluctuation occurring behind a cone entering water at constant velocity. The current simulations reveal that fluctuations arise following deep pinch-off, leading to pronounced pressure oscillations in both and air regions. Concurrently, ripples form along surface, extending from nose tail, resulting wavy cylindrical cavity. Notably, when entry Froude number is below 10, load on predominantly due induced by fluctuations, which exceed slamming...