A numerical model has been developed to study 3D (three-dimensional) liquid sloshing in a tank with baffles. The numerical model solves the spatially averaged Navier-Stokes equations, which are constructed on a non-inertial reference frame having six DOF (degree-of-freedom) of motions. The LES (large-eddy-simulation ) approach is employed to model turbulence by using the Smagorinsky SGS (sub-grid scale) closure model. The two-step projection method is employed in the numerical solutions, aided by the Bi-CGSTAB technique to solve the pressure Poisson equation for the filtered pressure field. The second-order accurate VOF (volume-of-fluid) method is used to track the distorted and broken free surface. The baffles in the tank are modeled by the concept of VBF (virtual boundary force) method. The numerical model is first validated against the available analytical solution and experimental data for 2D (two-dimensional) liquid sloshing in a tank without baffles. The 2D liquid sloshing in tanks with baffles is then investigated. The numerical results are compared with other results from available literatures. Good agreement is obtained. Finally, the model is used to study 3D liquid sloshing in a tank with vertical baffles. The effect of the baffle is investigated and discussed.
Three-dimensional liquid sloshing in a tank with baffles
Dreidimensionales Schwappen von Flüssigkeit in Tanks mit Prallplatten
Ocean Engineering ; 36 , 2 ; 202-212
2009
11 Seiten, 24 Quellen
Article (Journal)
English
Analysis of flexible baffles for damping tank sloshing
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