Numerical Investigation and Experimental Validation of Pumping Phenomenon Occurred under Liquid Sloshing Using Perforated Baffle

Abdallah BOUABIDI ； Zied DRISS ； Mohamed Salah ABID

《中國機械工程學刊》 41卷5期 (2020/10) Pp. 681-693

摘要

Liquid sloshing is phenomenon presented in the tank partially filled with liquid under the external excitations. The aim of this paper is to study a hydrostatic pump created using a perforated baffle. Two perforated baffles are used to divide the tank into three volumes with two connecting chambers in the tank bottom. A numerical simulation is performed to predict the pumping phenomenon occurred under the liquid sloshing in the tank subjected to sinusoidal excitation. The volume of fluid (VOF) method based on the finite volume method is used to simulate two phase flow problem. The distribution of the static pressure and the velocity in whole volume of the tank are presented and analyzed to understand the operating mode of the hydrostatic pump. The pressure and the velocity evolution over time are presented in five different points for each connecting chamber. The results show that the imbalance pressure can create the pumping phenomenon between the volumes of the tank. An experimental setup with sinusoidal movement is developed and the hydrostatic pump in the tank partially filled with liquid is studied experimentally. The comparison between the numerical and the experimental results for the liquid motion shows a good agreement.

關鍵字

Liquid sloshing ； pumping phenomenon ； perforated plate ； external excitation