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Shock and Vibration
Volume 2014, Article ID 507281, 15 pages
http://dx.doi.org/10.1155/2014/507281
Research Article

Liquid Sloshing in a Horizontal Circular Container with Eccentric Tube under External Excitation

1Department of Mechanical Engineering, Islamic Azad University, Firoozkooh Branch, Firoozkooh, Iran
2School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
3Young Researchers and Elites Club, Islamic Azad University, Science and Research Branch, Tehran, Iran

Received 23 February 2014; Accepted 27 July 2014; Published 7 September 2014

Academic Editor: Mohammad Elahinia

Copyright © 2014 Mohammad Nezami et al. 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.

Abstract

Appropriate conformal mapping transformation in combination with the linear potential theory is employed to develop mathematical model for two-dimensional sloshing in horizontal circular cylindrical containers with overall eccentric hole. The tube-type tank is filled with inviscid incompressible fluid up to its half depth and subjected to lateral accelerations. A ramp-step excitation encountered in a road turning maneuver as well as real seismic event is used to simulate the lateral acceleration excitation. The resulting linear sets of ordinary differential equations are truncated and then solved numerically by employing Laplace transform technique followed by Durbin’s numerical inversion pattern. The effects of excitation input time, eccentricity, and radii ratio on the hydrodynamic responses and suppression of the induced destabilizing lateral forces are examined. Limiting cases are considered and good agreements with available analytic and numerical solutions as well as the simulations performed by using a commercial FEM software package are obtained.