Numerical simulation of liquid sloshing in LNG tanks using a compressible two-fluid flow model


Chen, Y.G., Price, W.G. and Temarel, P. (2009) Numerical simulation of liquid sloshing in LNG tanks using a compressible two-fluid flow model. 19th (2009) International Offshore and Polar Engineering Conference (ISOPE-2009), Osaka, Japan, 21 - 26 Jun 2009. Mountain View, USA, The International Society of Offshore and Polar Engineers (ISOPE)10pp, 221-230.

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Description/Abstract

In this investigation the Reynolds-Averaged Navier-Stokes (RANS)
equations are modified to account for variable density and viscosity of
the two-fluids flow (i.e. water-air), assuming both fluids compressible.
By introducing a preconditioner, the governing equations in terms of
primitive variables are solved for both fluids in a unified manner. The
non-conservative implicit Split Coefficient Matrix Method (SCMM) is
modified to approximate convective flux vectors in the dual time
formulation. The free surface waves inside the tank, due to sloshing, are
implicitly captured by using a level set approach.
The method is illustrated through applications to rectangular and
chamfered tanks subject to sway or roll motions at different filling
levels and excitation conditions (i.e. amplitude and frequency of
oscillation). Comparisons are made between calculated and
experimental pressures, where available.

Item Type: Conference or Workshop Item (UNSPECIFIED)
ISBNs: 9781880653531 (hardback)
ISSNs: 1098-6189 (print)
Keywords: Sloshing, impact pressure, compressible interface flow, level set method, LNG tank
Subjects: V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Q Science > QA Mathematics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Fluid-Structure Interactions
ePrint ID: 68614
Date Deposited: 09 Sep 2009
Last Modified: 27 Mar 2014 18:48
URI: http://eprints.soton.ac.uk/id/eprint/68614

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