A5103161217- Fluid Dynamics Simulations and Interactions
- Fluid Dynamics and Heat Transfer
- Cavitation Phenomena in Pumps
- Electromagnetic Launch and Propulsion Technology
- Spacecraft and Cryogenic Technologies
- Fire Detection and Safety Systems
- High-Velocity Impact and Material Behavior
- Rock Mechanics and Modeling
- Grouting, Rheology, and Soil Mechanics
- Hydraulic and Pneumatic Systems
- Additive Manufacturing Materials and Processes
- Combustion and Detonation Processes
- Geoscience and Mining Technology
- Robotic Path Planning Algorithms
- Ship Hydrodynamics and Maneuverability
- Structural Health Monitoring Techniques
- Nuclear Engineering Thermal-Hydraulics
- Arctic and Antarctic ice dynamics
- Civil and Geotechnical Engineering Research
- Computational Fluid Dynamics and Aerodynamics
- Vibration and Dynamic Analysis
- Ultrasound and Cavitation Phenomena
- Advanced Algorithms and Applications
- Geotechnical Engineering and Underground Structures
- Surface Modification and Superhydrophobicity
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2021-2024
Sun Yat-sen University
2021-2024
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2021-2024
Tongji University
2016-2023
Chungnam National University
2019-2023
Harbin Engineering University
2010-2018
University of Minnesota
2018
Saint Anthony College of Nursing
2018
This paper presents an experimental investigation on drag characteristics and flow physics of ventilated supercavitating objects with different body shapes. The test model consists a disk-type cavitator two forebodies (slender blunt shape) three rear bodies (flat, shrinkage, expanded shape). Experiments are conducted in cavitation tunnel the Chungnam National University. First, forces acting body-combinations fully wetted conditions measured. results show that coefficients strongly depend It...
We conduct an experimental study of the ventilated supercavitation generated from gas jet cavitator [gas (GJVS)] over a broad range ventilation and flow conditions for two nozzle sizes. The experiments show that supercavity evolves across different cavity regimes with distinct patterns, i.e., bubbly flow, Stable Cavity (SC), Unstable (UC), Jet (JC) increasing rate. transition is shown to be result stagnation location shifting potential core zone established turbulent as increases. variation...
In this work, we show experimentally a method for reducing impact force. We report experimental obvservations of different cavity regimes and modes formed by gas jet under conditions examine their The interest can achieve 90% reduction mechanism force is considered to be the result added mass coupling momentum.
The potential deformation and failure of a slope with typical 3D shapes involve characteristics, such that these factors cannot be simulated using 2D methods. If characteristics are not considered in expressway monitoring, an excessive number monitoring points may arranged the stable/safe part, whereas insufficient unstable/dangerous part. In this study, Lijiazhai Shicheng-Ji'an Expressway Jiangxi Province, China were analyzed by numerical simulations strength reduction method. surface...
To reduce the energy dissipation of submerged water jet, a series experiments jet wrapped in an annular gas are performed under different ventilation rates, sizes, nozzle diameters, and velocities transparent tank. In experiments, ventilated cavity is created by that encloses jet. The separated from surrounding within certain distance after leaving exit cavity, which contributes to effective working length significantly increasing, referring decrease. Furthermore, geometry changes...
ABSTRACT The unmanned aerial‐aquatic vehicle (UAAV) can be operated in both air and water for scientific engineering applications. However, the endurance maneuverability of UAAV are challenged by complex multi‐domain tasks. Inspired locomotion modes tilt‐rotor aerial (UAV) hybrid underwater glider (HUG), design implementation a multimodal presented this paper. This repeat trans‐domain move underwater. To minimize configuration redundancy weight vehicle, amphibious structures implemented,...
This study investigates the dynamics of cavities formed by water entry an impacting air jet. Utilizing a fine tube that continuously injects and falls freely, we observe creation subsequent collapse jet cavities. Our experimental observations reveal these do not undergo surface seal event, Worthington exhibits rippling droplet breakup after deep seal. The behavior cavity is influenced dual Froude numbers, resulting in distinct types. Additionally, report four regimes identify mechanisms...
It is vital to determine the critical distance between a mining roadway and natural vertical water-blocked body (VWBB) where substantial water level difference seepage gradient have developed two sides of VWBB. A VWBB was defined then determined using 3D numerical simulation method based on strength reduction method. The primary value in consideration potential equivalent plastic strain zone induced by roadways. In other influencing factors, suggested as 105.00 m.
The shape with negative pressure gradient (NPG) is the necessary condition that can ensure vehicle moving in water not to separate. Separation and cavitation characters of U-1 NPG were simulated, results compared Nesteruk's experimentation data. According potential theory, two different aerofoils designed. Considering angle attack Reynolds number, separation numerical calculated for shapes NPG. distribution theory wind tunnel test are confirmed, however, phenomenon observed a super cavity...