SLOSHING IN A RECTANGULAR STORAGE TANK WITH A HORIZONTAL PERFORATED PLATE - NUMERICAL STUDY FOR 2–D PROBLEMS -

Year 2017, Issue: 09, 3 - 18, 01.10.2017

Hakan Akyıldız

Abstract

SLOSHING IN A RECTANGULAR STORAGE TANK WITH A HORIZONTAL PERFORATED PLATE - NUMERICAL STUDY FOR 2–D PROBLEMS -

Abstract

The liquid sloshing in a moving partially filled rectangular tank with horizontal perforated plate is investigated assuming inviscid, incompressible and irrotational flows. Inner structures can be used to restrain liquid sloshing and prevent tank damage. The liquid fill level and length of those baffles affecting the sloshing masses and liquid motion are also investigated in details. In order to assess the effects of the perforated plate, a rectangular tank with an inner perforated plate was excited under different rolling amplitudes and frequencies. The maximum pressures were examined. A numerical algorithm based on the volume of fluid technique VOF is used to study the non-linear behavior of liquid sloshing. The numerical model solves the complete Navier-Stokes equations in primitive variables by using of finite difference approximations with the moving coordinate system. The ratio of the baffle height to the initial liquid depth has been chosen as hP / h = 1/3, 1/2 and 2/3. The effect of the perforated plate height to reach the roof of the tank have been investigated. The numerical results indicate that the perforated plate can significantly restrain resonant sloshing in the tank under rolling excitation

Keywords

Sloshing, Two-dimensional free surface flow, Volume of fluid technique, Finite difference method, Horizontal perforated plate

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