宇宙機用推薬タンクを対象とした微小重力環境下スロッシング挙動に関する基礎研究

抄録

Fluid behavior in microgravity (μg) is different from in ground gravity since surface tension, viscous force, and wetting are dominant in μg condition. In propellant tank for artificial satellite and future on-orbit spacecraft, sloshing due to disturbance and settling phenomena by change of acceleration have to be understood for design of propellant supply system and attitude control system. These fluid behaviors in μg is affected by a dynamic wetting significantly, therefore it is very important understand dynamic wetting behavior. CFD analysis introducing Cox`s equation in consideration of dynamic contact angle were conducted. We observed sloshing phenomena in cylindrical containers in μg conditions created by drop tower facility and these results were compared with CFD analysis results.