Numerical Analyses of Fluid Dynamics under Microgravity Condition in Vane Type Surface Tension Tank

摘要

Numerical analyses of fluid dynamics were carried out in a vane type surface tension tank, which incorporates propellant management device for microgravity conditions. Calculation of static menisci by "Surface Evolver" and numerical simulations of dynamic fluid behavior by a simple one-dimensional analytical model and numerical simulation code "FLOW-3D" were conducted. These results were evaluated by experimental results under microgravity conditions employing a drop shaft facility. Calculated static menisci were consistent with experimental values. Dynamic fluid behavior agreed well with experimental results in the tint period after the microgravity condition started. However, the analytical code must be improved because the liquid behavior trapped in the vicinity of the vane could not be adequately simulated.