微重力状态下自由液面构型的Surface Evolver软件计算

Surface Evolver Calculation of Free Liquid Surface Configuration Under Microgravity

以扇柱形贮箱为研究对象,根据微重力状态下液体的毛细现象,基于Surface Evolver软件平台,建立了三维分析模型.利用该模型进行数值模拟,深入研究了微重力状态下扇柱形贮箱内角处自由液面的爬升特性,数值分析结果与实验结果吻合良好,证明了该方法的合理有效性.通过数值分析,详细探讨了接触角及容器中心角对微重力条件下自由液面爬升的影响规律,发现液体与容器壁接触角之和小于90°时,液体会不断爬升;当中心角大于50°时,液体爬升高度变化很小.

Taking a cylindrical storage box as the research subject and based on the liquid capillary phenomenon under microgravity, a 3 -D analysis model was established based on the Surface Evolver software. Using this model in numerical simulation,the free liquid surface’s climbing properties at the sector inner angle of the cylindrical storage box were studied under microgravity. The results of numerical analysis fitted the experimental results well, which confirmed the rationality and effectiveness of this m e t h o d. B y numerical analysis,the pattern of how the free liquid surface climbing was influenced by the contact angle and the container＇ s central angle under microgravity was studied. It was found that w h e n the s u m of contact angle between the liquid and the container wall is less than 90°,the liquid is constantly climbing,and when the container’s central angle is mor e than 50°,the liquid’s climbing height changes little .