Abstract
The density-stratified liquids horizontal sloshing was tested on a vibration table, and a series of laboratory experiments have been performed to analyze the influence of the excitation frequency on density-stratified liquids sloshing in a partially filled rectangular tank. The MultiphaseInterFOAM solver in OpenFOAM was employed to simulate two-layer fluids sloshing problems. The numerical results of dynamic pressure were validated against the experimental data, showing that the employed model can accurately simulate the stratified liquids sloshing phenomenon. Effects of two-layer fluids liquid depth ratio and total liquid depth on stratified sloshing characteristics were discussed in detail. The response law of the maximum interfacial wave elevation to external excitation frequency was presented in this study. The evolution of the velocity field of density-stratified liquids sloshing is also studied.
Highlights
Stratified liquids sloshing refer to the interfacial movement of two or more immiscible fluids in a partially filled container, which are a common phenomenon that widely exists in many industrial and environmental sectors
Violent sloshing can create highly localized impact force on tank walls or ceiling which may lead to damage of the tank and may even induce sufficient large moment to affect the stability of the vehicle which carries the partially filled container with fluid, especially when the external excitation frequency is close to the resonance frequency
It is important to obtain the curves of free surface and interfacial wave response amplitude in a wide range of frequencies for understanding the dynamic characteristics of density-stratified liquids sloshing in a tank
Summary
Stratified liquids sloshing refer to the interfacial movement of two or more immiscible fluids in a partially filled container, which are a common phenomenon that widely exists in many industrial and environmental sectors. Stratified liquids sloshing is a typical multiphase flow and multi-interfacial flow motion problems, and the study of the mechanism of nonlinear interfacial motion has been the forefront of computational fluid dynamics research. Wu [12] studied the sloshing motion of inviscid density-stratified liquids in a rectangular container based on linear potential flow theory and gave free surface wave height and pressure expressions when density stratification. Xue et al [16] simulated the sloshing of a two-dimensional layered flow of oil-water with a free surface based on an improved volume of fluid method and carried out experimental verification. Xue et al [22] numerically studied seiche oscillations of stratified fluids in a closed rectangular tank under various initial inclination angles of the free surface and interfacial layers.
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