微重力下容器圆形倒角处的毛细驱动流

Capillary-driven flows along rounded interior corners in microgravity

空间探索计划的需求对空间流体管理技术提出了新的挑战。流体管理设备的内角是主要的流体传输'管道',因此研究微重力下容器内角处的毛细驱动流具有重要的意义。由于设计和制造等原因,完美的尖角并不常见,而是带有一定圆角过渡的内角。笔者设计不同的带有圆形过渡内角的容器,选用10cSt硅油为实验流体介质,通过一系列的落塔实验,研究了容器内角处不同的圆角半径对毛细驱动流的影响,并分析得到了有价值的实验规律。

Fluid management in space is facing new challenges because of the requirements of space exploration. It is crucial to investigate the capillary driven flows in vessel＇s interior comers as the fluid management devices＇ comers provide the main conduits for the transfer of fluids. In many instances, the interior corners are not perfectly sharp but rather possess a degree of roundedness due to the design or fabrication. In this work, different containers with rounded interior comers are designed and lOcSt silicone oil is used for a series of drop tower experiments. Based on the investigation into the impacts of the varying radius on the capillary driven flows, valuable experimental rules are found.