Studying and Analysis of Nonlinear Sloshing (Vibrating) of Interaction Fluid Structure in Storage Tanks


Ali I. Al-Zughaibi, Emad Q. Hussein, Farhan Lafta Rashid*


College of Engineering, University of Kerbala, Karbala, Iraq

Corresponding Author Email: ali.i@uokerbala.edu.iq; emad.dujaily@uokerbala.edu.iq; farhan.lefta@uokerbala.edu.iq

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Sloshing (vibration) is an evolving phenomenon of fluid movement, with non-linear and highly random properties that affect the tank wall and can cause structural fatigue resulting in tank destruction. The main objective of the present work is to study slip behavior in rigid tanks that undergo sudden acceleration. ANSYS was used for three different tank filling depths as (30%, 50%, 70%) for 3D transient analysis and a multi-phase model was adapted to track the free surface of the liquid through the use of Volume of Fluid (VOF). A system coupling was modified for conjoining the fluid and solid domain. The dynamic meshing technique is used to simulate excitation sources via a User Defined Function (UDF) by developing a code in the C ++ environment to evaluate the interference.. This study showed the transient stress and deformation of the baffle increases by close to 55%, as a result of changing the partially filled liquid depths from 30% to 70%, whereas the magnitude of them was decreased about 10% when the tank using baffles, thus, it should be considering and has become an important outcome in tank design. The comparison of the simulation data with the previous measurement is performed to prove the effectiveness and reality of the Finite Element Methods (FEM) simulates model.