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Numerical modeling of liquid sloshing in flexible tank with FSI approach

Lydia Khouf (Research Laboratory of Applied Hydraulics and Environment, Faculty of Technology, University of Bejaia, Bejaia, Algeria and Cherbourg University Laboratory of Applied Sciences LUSAC – ESIX Normandie, University of Caen Normandy, Cherbourg-Octeville, France)
Mustapha Benaouicha (Segula Technologies, Naval and Energy engineering Research and Innovation Unit, Rueil-Malmaison, France and Cherbourg University Laboratory of Applied Sciences LUSAC – ESIX Normandie, University of Caen Normandy, Cherbourg-Octeville, France)
Abdelghani Seghir (Research Laboratory of Applied Hydraulics and Environment, Faculty of Technology, University of Bejaia, Bejaia, Algeria)
Sylvain Guillou (Cherbourg University Laboratory of Applied Sciences LUSAC – ESIX Normandie, University of Caen Normandy, Cherbourg-Octeville, France)

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 27 August 2021

Issue publication date: 11 January 2023

122

Abstract

Purpose

The paper aims to present a numerical modeling procedure for the analysis of liquid sloshing in a flexible tank subjected to an external excitation, with taking into account the effects of fluid–structure interaction (FSI).

Design/methodology/approach

A numerical model based on coupling a two-phase flow solver and an elastic solid solver is developed in OpenFOAM code. The Arbitrary Lagrangian–Eulerian formulation is adopted for the two-phase Navier–Stokes equations in a moving domain. The volume of fluid (VOF) method is applied for the air–liquid interface tracking. The finite volume method is used for the spatial discretization of both the fluid and the structure dynamics equations. The FSI coupling problem is solved by an explicit coupling scheme. The model is validated for linear and nonlinear sloshing cases. Then, it is used to analyze the effects of the liquid sloshing on the dynamic response of the tank and the effects of the tank flexibility on the liquid sloshing.

Findings

The obtained results show that the flexibility of the tank walls amplifies the amplitude of the sloshing and increases the fluctuation period of the air–liquid interface. Furthermore, it is found that the bending moment acting on the tank walls may be underestimated when rigid walls assumption is adopted as usually done in sloshing tank modeling. Also, tank walls flexibility causes a phase shift in the free surface dynamic response.

Originality/value

A review of previous studies on liquid sloshing in flexible tanks revealed that FSI effects have not been clearly and comprehensively analyzed for large-amplitude liquid sloshing. Many physical and numerical aspects of this problem still require clarifications and enhancements. The added value of the present work and its originality lie in the investigation of large-amplitude liquid sloshing in flexible tanks by using a staggered coupling approach. This approach is carried out by an original combination of a linear solid solver with a two phase fluid solver in OpenFOAM code. In addition, FSI effects on some response quantities, identified and analyzed herein, have not been found in the previous works.

Keywords

Acknowledgements

This work was supported by, the Profas B+ scholarship from the Algerian Ministry of Foreign Affairs, Segula Technologies France, and the University of Caen Normandy, France.

The present work was performed using computing resources of CRIANN (Normandy, France).

Citation

Khouf, L., Benaouicha, M., Seghir, A. and Guillou, S. (2023), "Numerical modeling of liquid sloshing in flexible tank with FSI approach", World Journal of Engineering, Vol. 20 No. 1, pp. 131-142. https://doi.org/10.1108/WJE-03-2021-0125

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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