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Some modifications of MPS method for incompressible free surface flow

Some modifications of MPS method for incompressible free surface flow
Some modifications of MPS method for incompressible free surface flow
As a Lagrangian mesh-free method, the Moving Particle Semi-implicit (MPS)[1] method is very suitable for simulating violent flows, such as breaking waves on free surface. However, despite its wide range of applicability, the original MPS algorithm suffers from some inherent difficulties in obtaining an accurate fluid pressure in both spatial and time domain. Different modifications to improve the method have been proposed [2-5] in the literature. In this paper, the authors developed a particle position shifting and collision handling technique which could effectively suppress the pressure fluctuation. In addition, a new version of “cell-link” neighbour particle searching strategy, which reduces about 7/9 (~78%) of the searching area compared with traditional “cell-link” algorithm, is proposed.
The developed MPS method with the proposed modifications has been tested on two free surface flow problems: 2D dam break and liquid sloshing. The numerical results obtained are found to be in good agreement with the available numerical and experimental results. With the proposed modifications, the stability and accuracy of the pressure field are improved in spatial and time domains.
moving particle semi-implicit (MPS) method, particle method, free surface problem, sloshing, dam-break
978-84-942844-7-2
Sun, Zhe
59e9a029-3204-41bc-8543-faa8b25f4a4b
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J.T.
d4fe7ae0-2668-422a-8d89-9e66527835ce
Javed, A.
a3a57efd-0767-45b7-90ce-eff91d14ec3a
Sun, Zhe
59e9a029-3204-41bc-8543-faa8b25f4a4b
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J.T.
d4fe7ae0-2668-422a-8d89-9e66527835ce
Javed, A.
a3a57efd-0767-45b7-90ce-eff91d14ec3a

Sun, Zhe, Djidjeli, K., Xing, J.T. and Javed, A. (2014) Some modifications of MPS method for incompressible free surface flow. WCCM XI: 11th World Conference on Computational Mechanics, Spain. 20 - 25 Jul 2014. 12 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

As a Lagrangian mesh-free method, the Moving Particle Semi-implicit (MPS)[1] method is very suitable for simulating violent flows, such as breaking waves on free surface. However, despite its wide range of applicability, the original MPS algorithm suffers from some inherent difficulties in obtaining an accurate fluid pressure in both spatial and time domain. Different modifications to improve the method have been proposed [2-5] in the literature. In this paper, the authors developed a particle position shifting and collision handling technique which could effectively suppress the pressure fluctuation. In addition, a new version of “cell-link” neighbour particle searching strategy, which reduces about 7/9 (~78%) of the searching area compared with traditional “cell-link” algorithm, is proposed.
The developed MPS method with the proposed modifications has been tested on two free surface flow problems: 2D dam break and liquid sloshing. The numerical results obtained are found to be in good agreement with the available numerical and experimental results. With the proposed modifications, the stability and accuracy of the pressure field are improved in spatial and time domains.

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More information

e-pub ahead of print date: 22 July 2014
Venue - Dates: WCCM XI: 11th World Conference on Computational Mechanics, Spain, 2014-07-20 - 2014-07-25
Keywords: moving particle semi-implicit (MPS) method, particle method, free surface problem, sloshing, dam-break
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 368592
URI: http://eprints.soton.ac.uk/id/eprint/368592
ISBN: 978-84-942844-7-2
PURE UUID: f90c9342-17a2-4dc3-b547-6a368fbd96f5

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Date deposited: 13 Sep 2014 12:01
Last modified: 25 Nov 2019 20:40

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