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The effect of fluid compressibility on the simulation of sloshing impacts

Record type: Article

Resonant and near-resonant sway-induced sloshing flow in a rectangular container is used to compare various combinations of compressibility models for air and water. The numerical model is implemented in a commercial RANS CFD code. A criterion based on wave propagation is developed to assess the importance of including fluid compressibility. For sloshing flows with low levels of fluid impact this can be simulated with incompressible fluid models for both air and water. When modelling sloshing at low filling levels with a travelling wave, which generates large air bubble entrainment, the choice of fluid compressibility model is shown to have a significant influence on pressure magnitude and frequency of oscillation required for structural assessment. Further comparisons with theoretical models show that a full thermal energy compressibility model is also required.

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Citation

Godderidge, Bernhard, Turnock, Stephen, Earl, Chris and Tan, Mingyi (2009) The effect of fluid compressibility on the simulation of sloshing impacts Ocean Engineering, 36, (8), pp. 578-587. (doi:10.1016/j.oceaneng.2009.02.004).

More information

Published date: 7 February 2009
Keywords: sloshing, computational fluid dynamics, compressibility, fluid impact, pressure oscillation frequency
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 66251
URI: http://eprints.soton.ac.uk/id/eprint/66251
ISSN: 0029-8018
PURE UUID: 5e0750fa-f02b-4202-a5a5-767628cbcbc6
ORCID for Stephen Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 21 May 2009
Last modified: 19 Jul 2017 00:26

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Contributors

Author: Bernhard Godderidge
Author: Stephen Turnock ORCID iD
Author: Chris Earl
Author: Mingyi Tan

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