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Finite Element Analysis of Sloshing Eigen Behavior in Horizontal Baffled Fuel Tank  

조진래 (부산대학교 기계기술연구소)
하세윤 (부산대학교 대학원 기계설계공학과)
이홍우 (부산대학교 대학원 기계설계공학과)
박태학 (국방과학연구소)
이우용 (국방과학연구소)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.15, no.4, 2002 , pp. 619-628 More about this Journal
Abstract
This paper deals with the FE analysis for the free vibration of sloshing in horizontal cylindrical tank with baffles. We use Laplace equation based on potential theory as governing equation. This problem is solved by FEM using lineal isoparametric elements. We assume that the tank as well as baffles is rigid body and by separating nodes into two at the baffle location, baffle effect is obtained by separating nodes into two at the baffle location. For the calculation of natural frequencies and mode shapes, we introduce Lanczos transformation and Jacobi iteration methods. Numerical results of the first longitudinal and transverse modes, while comparing with literature cited, are very good. In order for the baffle effects on the free vibration of sloshing, various combinations of baffle parameters, which are location, inner diameter and number, are examined.
Keywords
Sloshing; Baffle; Finite element; Natural frequency; Mode shape; Longitudinal mode; Transverse mode;
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