Numerical study on suppressing violent transient sloshing with single and double vertical baffles
The effectiveness of vertical baffles of different configurations in suppressing violent transient sloshing was numerically investigated with the lattice Boltzmann method (LBM). Volume-of-fluid (VOF) and large eddy simulation (LES) models were employed to simulate a violent wave-breaking phenomenon at finite water depths under resonance conditions. The liquid elevation, total impact pressure and energy dissipation were measured to evaluate the damping effect with regard to the installation of single or double vertical baffles of different heights and separation distances. The results indicate that the interaction between the free surface and the vortex caused by the shearing effect at the tip of vertical baffles constitutes the essential mechanism responsible for damping the sloshing wave. A quantitative method is first proposed to distinctively quantify the viscous dissipation that occurred on the interface and interior of the fluid, and the results demonstrate that strong internal dissipation is most important for suppressing the sloshing wave. The spacing distance is important for the damping effect on the sloshing pressure, and the proper distribution of two vertical baffles can inhibit the peak impact pressure to more than about three times lower than that when double baffles with a poor arrangement are used.
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Supplemental Notes:
- © 2020 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Ma, Chunlei
- Xiong, Chengwang
- Ma, Guowei
- Publication Date: 2021-3-1
Language
- English
Media Info
- Media Type: Web
- Features: Figures; References; Tables;
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Serial:
- Ocean Engineering
- Volume: 223
- Issue Number: 0
- Publisher: Pergamon
- ISSN: 0029-8018
- EISSN: 1873-5258
- Serial URL: http://www.sciencedirect.com/science/journal/00298018
Subject/Index Terms
- TRT Terms: Fluid mechanics; Hydrodynamics; Numerical analysis; Ocean engineering; Simulation; Sloshing
- Identifier Terms: Lattice Boltzmann methods
- Subject Areas: Hydraulics and Hydrology; Marine Transportation;
Filing Info
- Accession Number: 01765270
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 22 2021 10:20AM