Title: Computational study of sloshing in spherical tanks and the effect of using annular baffle over slosh force frequency and damping

Authors: Habib Ahmad; Ammar Ahmed; Ismail Baila; Ajmal Shah; Mazhar Iqbal

Addresses: Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Pakistan ' Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Pakistan ' Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Pakistan ' Center for Mathematical Sciences, Pakistan Institute of Engineering and Applied Sciences, Pakistan ' Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Pakistan

Abstract: Partially filled liquid containers are subjected to sloshing when acted upon by an external force or acceleration. The sloshing liquid applies varying forces on walls of the container that have to be included in its design. In this study, the CFD method was validated against experimental data from existing literature. Using the validated method, the impact of the liquid fill level in the container, initial perturbation velocity, and variation in time step size over the frequency and damping of sloshing force was studied. Moreover, a novel idea of introducing an annular baffle in spherical tanks has been proposed to minimise the effects of sloshing on the container. The damping effect of the annular baffle in a spherical container was analysed using a validated CFD method. The result comparison of the two cases shows a significant increase in the damping of slosh force by the introduction of an annular baffle.

Keywords: sloshing; spherical tanks; slosh damping; CFD; annular baffle.

DOI: 10.1504/PCFD.2022.120274

Progress in Computational Fluid Dynamics, An International Journal, 2022 Vol.22 No.1, pp.15 - 22

Received: 16 Sep 2020
Accepted: 07 Mar 2021

Published online: 07 Jan 2022 *

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