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http://dx.doi.org/10.5574/KSOE.2015.29.1.001

Sloshing Analysis in Rectangular Tank with Porous Baffle  

Cho, IL-Hyoung (Department of Ocean System Engineering, Jeju National University)
Publication Information
Journal of Ocean Engineering and Technology / v.29, no.1, 2015 , pp. 1-8 More about this Journal
Abstract
An analytical model of liquid sloshing is developed to consider the energy-loss effect through a partially submerged porous baffle in a horizontally oscillating rectangular tank. The nonlinear boundary condition at the porous baffle is derived to accurately capture both the added inertia effects and the energy-loss effects from an equivalent non-linear drag law. Using the eigenfunction expansion method, the horizontal hydrodynamic force (added mass, damping coefficient) on both the wall and baffle induced by the fluid motion is assessed for various combinations of porosity, submergence depth, and the tank's motion amplitude. It is found that a negative value for the added mass and a sharp peak in the damping curve occur near the resonant frequencies. In particular, the hydrodynamic force and free surface amplitude can be largely reduced by installing the proper porous baffle in a tank. The optimal porosity of a porous baffle is near P=0.1.
Keywords
Porous Baffl; Energy Loss; Drag Coefficient; Sloshing; Resonant Frequency; Added Mass;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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