An Empirical Investigation of the Damping of Liquid Oscillations in Cylindrical Tanks with Vertical Baffles

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Sarvahed, Hessam | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 45258 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Dehghani Firouzabadi, Roohollah
Abstract:
In this study, an analytical investigation of the hydrodynamic damping due to vertical baffles in circular cylindrical storage tanks is investigated. A lot of research about damping characteristics of different types of baffles has been done but because of specific applications of vertical baffles, studies are limited in this case. For analytical approach the average rate of energy dissipation is obtained with using the solution of Laplace’s equation by estimation the rate of the work done by baffles drag force to the oscillatory flow. The analytical solution validate by a series of experiments that conducted at the Langley Research Center of the National Aeronautics and Space Administration. The developed dimensionless relation described the damping ratio for any configuration of vertical baffles with respect to size of the tank and baffle width, sloshing or excitation amplitude, and direction of excitation
Keywords:
Cylindrical Tanks ; Liquid Sloshing ; Vertical Baffle ; Empirical Investigation Relations ; Damping Evaluation

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