Abstract: In orbit, when spacecraft are placed in eastwest direction and northsouth direction, they are in lateral microgravity environment which makes the propellant reorientation get sloshing easier. And higher requirements are put forward for the management capability of the propellant management device (PMD) in lateral microgravity environment. A large number of simulations and experiments are needed to verify the performance of PMD in order to ensure the inorbit fluid management performance of the vane tank. Taking vanetype surface tension tank as research objects, the VOF (volume of fluid) twophase flow model is used to simulate the propellant movement process under the reorientation process in the lateral microgravity environment and analyze the propellant sloshing behavior in the process. In the end, the results of numerical simulation verify the management capability of the vanetype surface tension tank which can provide reference for the drop tower experiments and the space station tests.

Key words: lateral microgravity, vanetype surface tension tank, liquid behavior, liquid sloshing