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Advances in Aircraft and Spacecraft Science Volume 9, Number 4, July 2022 , pages 349-366 DOI: https://doi.org/10.12989/aas.2022.9.4.349 |
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Experimental study and numerical modeling of liquid sloshing damping in a cylindrical container with annular and sectorial baffles |
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Mohammad Mahdi Mohammadi and Hamid Moosazadeh
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| Abstract | ||
| The ability of baffles in increasing the sloshing damping is investigated in this study by theoretical, numerical, and experimental methods. Baffles Installed as separators in containers, can change the dynamic properties of sloshing. The main purpose of this study is to investigate the effect of baffle placement.The main purpose of this study is to investigate the effect of placing baffles in order to provide appropriate frequencies and damping and to present a practical baffle arrangement in the design of sloshing. In this regard, an experimental setup is designed to study the fluid sloshing behavior and damping properties in cylindrical tanks filled up to an arbitrary depth. A new combination of annular and sectorial baffles is employed to evaluate fluid sloshing in the tank. The results show that the proposed baffle arrangement has a desired effect on the damping and fluid sloshing frequencies and optimally satisfies the anticipated design requirements. In addition, the theoretical frequencies exceed empirical frequencies at the points far from baffles, while at the points close to baffles, the empirical ones are higher than theoretical ones. Also, at the depths near the bottom of container sloshing frequencies are not affected by sectorial baffles, although the theoretical curve predicts a reduction in the fundamental frequency of sloshing. Finally, the results of finite volume and finite element methods which compared with experimental data, indicated a good agreement between different approaches. | ||
| Key Words | ||
| anti-slosh baffles; circular cylindrical containers; damping ratio; finite volume method; free surface elevation; surface wave theory | ||
| Address | ||
| Mohammad Mahdi Mohammadi: Faculty of Mechanics, Malek Ashtar University of Technology, Tehran, Iran Hamid Moosazadeh: Department of Aerospace Engineering, Tarbiat Modares University, Tehran, Iran | ||
