Influence of Rayleigh-Taylor Instability on Liquid Propellant Reorientation in a Low-Gravity Environment |
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Authors: | LI Zhang-Guo LIU Qiu-Sheng LIU Rong HU Wei DENG Xin-Yu |
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Affiliation: | Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190Beijing Institute of Astronautical Systems Engineering, Beijing 100076 |
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Abstract: | A computational simulation is conducted to investigate the influence of Rayleigh-Taylor instability on liquid propellant reorientation flow dynamics for the tank of CZ-3A launch vehicle series fuel tanks in a low-gravity environment. The volume-of-fluid (VOF) method is used to simulate the free surface flow of gas-liquid. The process of the liquid propellant reorientation started from initially flat and curved interfaces are numerically studied. These two different initial conditions of the gas-liquid interface result in two modes of liquid flow. It is found that the Rayleigh-Taylor instability can be reduced evidently at the initial gas-liquid interface with a high curve during the process of liquid reorientation in a low-gravity environment. |
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Keywords: | 47.20.Ma 47.85.L- 47.55.Ca |
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