Volume 39 Issue 2
Mar.  2019
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HAN Zhiyi, DUAN Li. Behaviors of Capillary Surfaces of Liquid Drops in Rounded Corners[J]. Chinese Journal of Space Science, 2019, 39(2): 205-213. doi: 10.11728/cjss2019.02.205
Citation: HAN Zhiyi, DUAN Li. Behaviors of Capillary Surfaces of Liquid Drops in Rounded Corners[J]. Chinese Journal of Space Science, 2019, 39(2): 205-213. doi: 10.11728/cjss2019.02.205

Behaviors of Capillary Surfaces of Liquid Drops in Rounded Corners

doi: 10.11728/cjss2019.02.205
  • Received Date: 2018-02-07
  • Rev Recd Date: 2018-08-20
  • Publish Date: 2019-03-15
  • Containers with interior corners are applied in space fluid management extensively. It has lots of profound guiding significance for Space Fluid Management to research the interfacial behaviors of liquids in corners of containers in microgravity. Due to either design or fabrication problem, ideally sharp corner may not be achieved, but rather a somewhat rounded one. In this paper, theoretical analysis and numerical simulation are performed to research the behavior of liquid drops in rounded corners, including the case in which the contact angles on the two sides of the corner may be different, leading to a generalization of the Concus-Finn conjecture. Comparing with Concus-Finn conjecture which is a useful criterion to determine the behavior of liquid drops in sharp corners, there are some different characteristics of capillary surfaces behaviors in rounded corners. The generalized conjecture shows that the behaviors of capillary surfaces in rounded corners depend on not only the contact angle and the degree of interior corners, but also the radius of the rounded corners and the volume of liquid drops, which are dramatically different in sharp corners.

     

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