MULTI-DOMAIN BOUNDARY ELEMENT METHOD FOR LIQUID SLOSHING ANALYSIS OF TANKS WITH BAFFLES
V. GNITKO
A. N. Podgorny Institute for Mechanical Engineering Problems of the Ukrainian Academy of Sciences, Ukraine
V. NAUMENKO
Ukrainian State University of Railway Transport, Ukraine.
L. ROZOVA
National Technical University, Kharkiv Polytechnic Institute, Ukraine.
E. STRELNIKOVA *
A. N. Podgorny Institute for Mechanical Engineering Problems of the Ukrainian Academy of Sciences, Ukraine
*Author to whom correspondence should be addressed.
Abstract
In this paper we consider vibrations of the baffled fuel tank partially filled with a liquid. The liquid is supposed to be ideal and incompressible one and its flow introduced by the vibrations of a shell is irrotational. The problem of the fluid-structure interaction was solved using the single-domain and multi-domain reduced boundary element methods. The rigid baffled tanks with different annular orifices were considered. The dependencies of frequencies via the orifice radius at different values of filling level were obtained numerically for vibrations of the fluid-filled tanks with and without baffles.
Keywords: Fluid-structure interaction, baffles, liquid sloshing, free vibrations, single-domain and multi-domain boundary element methods, systems of singular integral equations.