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Dynamic Behavior in a Storage Tank in Reduced Gravity Using Dynamic Contact Angle Method

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Abstract

The oscillation of liquid/gas free surface in a partially filled storage tank caused by an abrupt drop of gravity level is of critical importance for the fluid management in space. In the present study, the dynamic behavior of free surfaces in a model tank (tube) is numerically investigated using volume of fluid (VOF) method in the context of dynamic contact angle (DCA) model. It is concluded that the dynamic behavior of free surface could be captured pretty well using the selected DCA model, as shown by comparison with the results of Drop Tower Beijing experiment. The temporal evolution of free surface reproduces exactly the characteristics of damping oscillations. The detailed dynamic deflections of meniscus reveal crucial dependency between the oscillation frequency of free surface and the boundary condition in the contact line. The oscillation frequency increases when the range of the moving contact line transfers from the spherical-shaped part to the cylindrical part of the tank and maintains constant when the moving contact line remains always at the cylindrical part of the tank. Meanwhile, the oscillation amplitude decreases in line with the increase of oscillation frequency.

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Acknowledgments

This research is supported by the National Nature Science Foundation of China (Gant No. 11672311), the Strategic Project of Leading Science and Technology (Class A), CAS (Grant No. XDA15012700) and the Key Research Program of Frontier Sciences, CAS (Grant No. QYZDY-SSW-JSC040).

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Correspondence to Kai Li or Jian-Fu Zhao.

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This article belongs to the Topical Collection: The Effect of Gravity on Physical and Biological Phenomena

Guest Editor: Valentina Shevtsova

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Li, JC., Lin, H., Li, K. et al. Dynamic Behavior in a Storage Tank in Reduced Gravity Using Dynamic Contact Angle Method. Microgravity Sci. Technol. 32, 1039–1048 (2020). https://doi.org/10.1007/s12217-020-09831-x

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  • DOI: https://doi.org/10.1007/s12217-020-09831-x

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