Modal Analysis of Transient Liquid Sloshing in Partially-Filled Tanks

Xue Lian Zheng; Xian Sheng Li; Yuan Yuan Ren; Zhu Qing Cheng

doi:10.4028/www.scientific.net/AMM.526.127

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 526Modal Analysis of Transient Liquid Sloshing in...

Modal Analysis of Transient Liquid Sloshing in Partially-Filled Tanks

Abstract:

To investigate the dynamic characteristics of liquid sloshing in partially-filled tanks, FLUENT simulation for liquid sloshing in cylinder tanks with the 40% liquid fill level and subject to lateral accelerations of 0.1 g-0.4 g were carried out. By the observation of transient sloshing force and the liquid free surface, it was found that the liquid sloshing is a periodic oscillation. Fourier transform was utilized to transform the sloshing forces in the time domain to the signals in the frequency domain. By spectrum analysis, it was found that the first-order oscillation that has the biggest amplitude is the most important one for liquid sloshing. For further command on liquid sloshing, modal shapes for the first sixth modal were acquired by ANSYS. It is drawn that the odd modals have anti-symmetrical shapes and the first-order oscillation makes the biggest contribution on liquid sloshing, the even modals have symmetrical shapes and could not contribute to liquid sloshing.

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Periodical:

Applied Mechanics and Materials (Volume 526)

Pages:

127-132

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.526.127

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Online since:

February 2014

Authors:

Xue Lian Zheng, Xian Sheng Li, Yuan Yuan Ren, Zhu Qing Cheng

Keywords:

Fourier Transform, Modal Analysis, Modal Shape, Partially-Filled Tanks, Transient Liquid Sloshing

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