Finite element analysis of resonant sloshing response in 2-D baffled tank

This paper is concerned with the numerical analysis of the resonance characteristics of liquid sloshing in a 2-D baffled tank subjected to the forced lateral excitation. Sloshing flow is formulated based on the linearized potential flow theory, while an artificial damping term is employed into the kinematic free-surface condition to reflect the eminent dissipation effect in resonant sloshing. A test FEM program is developed for the resonant sloshing analysis in frequency domain. The choice of the artificial damping coefficient is parametrically examined and the numerical accuracy is verified through the comparison with the available analytic solutions. Through the numerical analysis of sloshing frequency response with respect to the number, location and opening width of baffle, the sloshing damping characteristics by the baffle are parametrically investigated.

[1]  Mutsuto Kawahara,et al.  Lagrangian finite element method for free surface Navier-Stokes flow using fractional step methods , 1991 .

[2]  Odd M. Faltinsen,et al.  A numerical nonlinear method of sloshing in tanks with two-dimensional flow , 1978 .

[3]  A. Akinturk,et al.  An Efficient Liquid Sloshing Damper for Control of Wind Induced Instabilities , 2001 .

[4]  R. L. Bass,et al.  LIQUID DYNAMIC LOADS IN LNG CARGO TANKS , 1980 .

[5]  J.-R. Cho,et al.  ASSESSMENT OF CLASSICAL NUMERICAL MODELS FOR THE SEPARATE FLUID-STRUCTURE MODAL ANALYSIS , 2001 .

[6]  Joon-Hyung Cho,et al.  FREE VIBRATION ANALYSIS OF BAFFLED LIQUID-STORAGE TANKS BY THE STRUCTURAL-ACOUSTIC FINITE ELEMENT FORMULATION , 2002 .

[7]  D. V. Evans,et al.  Resonant frequencies in a container with a vertical baffle , 1987, Journal of Fluid Mechanics.

[8]  Jin-Rae Cho,et al.  Baffled fuel-storage container: parametric study on transient dynamic characteristics , 2002 .

[9]  F. Welt,et al.  Vibration Damping Through Liquid Sloshing, Part I: A Nonlinear Analysis , 1992 .

[10]  S. Y. Lee,et al.  Dynamic analysis of baffled fuel‐storage tanks using the ALE finite element method , 2003 .

[11]  Helmut F. Bauer,et al.  Nonlinear Mechanical Model for the Description of Propellant Sloshing , 1966 .

[12]  H. N. Abramson,et al.  Some measurements of the effects of ring baffles in cylindrical tanks , 1964 .

[13]  David G. Stephens,et al.  AN EXPERIMENTAL INVESTIGATION OF THE DAMPING OF LIQUID OSCILLATIONS IN CYLINDRICAL TANKS WITH VARIOUS BAFFLES , 1961 .

[14]  Jin Rae Cho,et al.  Free vibration analysis of aboveground LNG-storage tanks by the finite element method , 2000 .

[15]  E W Graham,et al.  The Characteristics of Fuel Motion which Affect Airplane Dynamics , 1951 .

[16]  Abdullah Gedikli,et al.  SEISMIC ANALYSIS OF A LIQUID STORAGE TANK WITH A BAFFLE , 1999 .

[17]  Joon-Hyung Cho,et al.  Finite element techniques for the free-vibration and seismic analysis of liquid-storage tanks , 2001 .

[18]  Medhat A. Haroun.  Vibration studies and tests of liquid storage tanks , 1983 .