CAPILLARY RISE OF LIQUID BETWEEN PLATES WITH A CERTAIN ANGLE UNDER MICROGRAVITY

• DOI: 10.6052/0459-1879-21-261
• Publication Date: 2021-12-18
• Authors: Shangtong Chen; Wu Di; Jia Wang; Duan Li; Qi Kang

In space, because the gravity basically disappears and secondary forces such as surface tension force play a major role, fluid behavior is quite different from that of ground. Therefore, it necessary to deeply explore laws characteristics in microgravity environment. The plate-type tank uses components manage environment, so provide thruster with gas-free propellant, which great significance for precise attitude control orbit adjustment spacecraft. Plate-type often include plates certain included angle, liquid storage blades. capillary rise between angle under explored this paper. influences dynamic contact wall, pressure loss caused by convection, viscous resistance, curved reservoir are all considered. A second order differential equation capillary-driven flow derived, can be solved forth-order Runge−Kutta method. By considering two dominant at same time, divided into three regions, approximate equations climbing height regions obtained. Six kinds numerical models created, silicone oil chonsen Volume Fluid(VOF) method used carry out simulation. Numerical results good agreement theoretical results, verifies analysis. This research basis plate tanks’ design management space.