推进剂贮箱液体晃动的仿真研究与验证

摘要

应用CFD软件进行了三维液体晃动仿真计算,得出了全部等效动力学模型参数,仿真结果与解析公式或试验结果符合得很好.还通过仿真计算进行了地面试验的相似准则分析,证明CFD对液体晃动仿真研究是可行的.通过仿真分析,可以获取异形贮箱的晃动特性,辅助和指导地面缩比模型晃动试验的进行.%In this paper, equivalent mechanical model parameters are obtained by simulation calculation ofthree-dimensional liquid sloshing with CFD software, in which the simulation results and analyticalformulas or test results match well. Similar criteria analysis of ground test is made through simulationherein, proving the feasibility of liquid sloshing research using CFD software. Through simulation analysis,sloshing properties of abnormal tank can be obtained, thus help to guide the sloshing test of ground scalemodel.