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Dynamic Response Analysis of Nonlinear Sloshing in Two Dimensional Rectangular Tank using Finite Element Method  

조진래 (부산대학교 기계공학부)
이홍우 (부산대학교 기계설계공학과 대학원)
하세윤 (부산대학교 기계설계공학과 대학원)
박태학 (국방과학연구소)
이우용 (국방과학연구소)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.16, no.1, 2003 , pp. 33-42 More about this Journal
Abstract
This paper deals with the FEM analysis of nonlinear sloshing of incompressible, invicid and irrotational flow in two dimensional rectangular tank. We use laplace equation based on potential theory as governing equation. For large amplitude sloshing motion, kinematic and dynamic free surface conditions derived from Bernoulli equation are applied. This problem is solved by FEM using 9-node elements. For the time integration and accurate velocity calculation, we introduce predictor-corrector time marching scheme and least square method. Also, numerical stability in tracking of free surface is obtained by direct calculation of free surface location to time variation. Numerical results of sloshing induced by harmonic excitations, while comparing with those of linear theory and references, prove the accuracy and stability. After verification of our program, we analyze sloshing response characteristics to the fluid height and the excitation amplitude.
Keywords
nonlinear sloshing; time marching; free surface tracking; mass conservation; resonance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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