摘要
在重力场下,贮箱中流体的状态是已知的,流体状态是按规律分层分布的,而在微重力环境下,贮箱中流体状态是未知的,气相和液相的分布是不规则的,其界面的几何形状也是不确定的。通过采用VOF方法,对贮箱中的液氢在微重力条件下进行了数值模拟研究,主要考虑了不同重力加速度,接触角和不同充液量等因素的影响,从而得到在微重力条件下影响气液分布的主要因素。
In the gravity field,the state of fluid in the tank is known,which is based on the law of hierarchical distri-bution. While under the circumstance of microgravity,the state of fluid in the tank is unknown. And the distribution of gas-eous phase and liquid phase is irregular. So the geometrical shape of the interface is unsure. This paper uses VOF method to simulate the liquid hydrogen storage tank under the circumstance of microgravity,which mainly considers the influ-ence of different factors,such as gravitational acceleration,contact angle and different working fluid filling. Thus the nu-merical simulation can summarizes the principal factor on the gas-liquid interface in microgravity.
出处
《真空与低温》
2016年第2期85-89,共5页
Vacuum and Cryogenics
关键词
微重力
液氢
重力加速度
接触角
充液量
microgravity
liquid hydrogen
gravitational acceleration
contact angle
working fluid filling
