A5041983121- Fluid Dynamics Simulations and Interactions
- Cavitation Phenomena in Pumps
- Computational Fluid Dynamics and Aerodynamics
- Fluid Dynamics and Heat Transfer
- Gas Dynamics and Kinetic Theory
- Combustion and flame dynamics
- Ship Hydrodynamics and Maneuverability
- Hydraulic and Pneumatic Systems
- Spacecraft and Cryogenic Technologies
- Wind and Air Flow Studies
- Particle Dynamics in Fluid Flows
- Rocket and propulsion systems research
Harbin Institute of Technology
2024
Beijing Institute of Technology
2015-2024
Underwater launch technology uses high-pressure gas to propel vehicles from tubes, with the nozzle activating, and accompanied by complex fluid dynamics phenomena such as supersonic jets, turbulence, cavitation. Despite significant advancements, challenges remain in understanding interactions between tail cavity jet coupling, especially regarding flow field evolution hydrodynamic effects on vehicle surface. This study combines experimental numerical simulations using volume of fraction model...
During the launch process of underwater vehicles, a tail cavity is formed at bottom, which plays crucial role in engine ignition stage. The flow state within this significantly impacts engine's operational efficiency. Moreover, evolution and jet coupling, along with hydrodynamic characteristics, influences motion attitude vehicle. This article delves into effects initial length, Froude number, pressure ratio on morphology utilizing water tunnel experiments to explore these dynamics vehicle's...
The aims of this paper are to study the thermo-fluid cavitating flows and evaluate effects physical properties on cavitation behaviours. Favre-averaged Navier-Stokes equations with energy equation applied numerically investigate liquid nitrogen around a NASA hydrofoil. Meanwhile, thermodynamic parameter Σ is used assess flows. results indicate that significantly affect behaviours, including pressure temperature distribution, variation properties, cavity structures. can be evaluated by under...
Abstract This paper proposes a novel approach that combines Proper Orthogonal Decomposition (POD) reduced-order system with Long Short-Term Memory (LSTM) neural network to predict flow velocity. Large Eddy Simulation (LES) is used simulate the cavitating around NACA66 hydrofoil. POD adopted reduce dimensionality of high-dimensional data. It was found 66.81% field energy and dominant coherent structures can be captured first eight modes. The LSTM model further temporal data mode coefficients,...
This study combines experimental measurements, numerical simulations, and theoretical analysis to investigate the subsonic discharge process in a container under normal temperature pressure conditions. Experimental data captured internal dynamics during exhaust at atmospheric environmental pressure. Numerical simulations using OpenFOAM validated isothermal model against results. Under assumption of ideal gas processes, nonlinear differential equation was derived describe evolution...
This study combines the experimental and numerical simulation methods to deeply analyze impact of liquid crossflow on discharge coefficient a gas jet hole flat plate. Experiments were conducted examine influence momentum flux ratio theoretical under various Reynolds numbers. It was found that variation with clearly reflects boundary layer velocity profile coefficient. The rapid growth in near wall direction normal surface, or decrease thickness layer, both enhance shearing effect crossflow,...