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The weak coupling between MPS and BEM for wave structure interaction simulation

The weak coupling between MPS and BEM for wave structure interaction simulation
The weak coupling between MPS and BEM for wave structure interaction simulation
As a Lagrangian type meshless method, the MPS is suitable for violent free surface problems. In this paper, for problems where violent free surface deformation only occur in a constrained area, the efficiency of MPS is further improved by weak coupling with BEM. More specifically, the whole computational domain is modeled by BEM whereas the MPS model only covers the violent flow area. Since the computational time of BEM is negligible compared with the time required by MPS, the overall computational efficiency could be improved by this coupling scheme (depends on how much of the MPS domain is replaced by BEM). The MPS model is advanced by the information from BEM result at each time step up to the time when the free surface is about to break. The MPS solver will continue the simulation with the “old” BEM information just before breaking, based on the assumption that the flow change at the MPS–BEM interface area is small enough. The proposed scheme is validated by two problems and a relatively good accuracy is obtained by comparing with published results in the literature.
MPS, BEM, Weak coupling, Wave Structure Interaction
0955-7997
111-118
Sun, Zhe
743cc7be-e3c6-4810-9cea-8ad2a38ccefc
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J.T.
9d07144c-d488-449e-8dd7-22f9685d2af5
Sun, Zhe
743cc7be-e3c6-4810-9cea-8ad2a38ccefc
Djidjeli, K.
94ac4002-4170-495b-a443-74fde3b92998
Xing, J.T.
9d07144c-d488-449e-8dd7-22f9685d2af5

Sun, Zhe, Djidjeli, K. and Xing, J.T. (2017) The weak coupling between MPS and BEM for wave structure interaction simulation. Engineering Analysis with Boundary Elements, 82, 111-118. (doi:10.1016/j.enganabound.2017.06.002).

Record type: Article

Abstract

As a Lagrangian type meshless method, the MPS is suitable for violent free surface problems. In this paper, for problems where violent free surface deformation only occur in a constrained area, the efficiency of MPS is further improved by weak coupling with BEM. More specifically, the whole computational domain is modeled by BEM whereas the MPS model only covers the violent flow area. Since the computational time of BEM is negligible compared with the time required by MPS, the overall computational efficiency could be improved by this coupling scheme (depends on how much of the MPS domain is replaced by BEM). The MPS model is advanced by the information from BEM result at each time step up to the time when the free surface is about to break. The MPS solver will continue the simulation with the “old” BEM information just before breaking, based on the assumption that the flow change at the MPS–BEM interface area is small enough. The proposed scheme is validated by two problems and a relatively good accuracy is obtained by comparing with published results in the literature.

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latex BEM-MPS-10th-June-2017 - Accepted Manuscript
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Accepted/In Press date: 11 June 2017
e-pub ahead of print date: 29 June 2017
Published date: September 2017
Keywords: MPS, BEM, Weak coupling, Wave Structure Interaction

Identifiers

Local EPrints ID: 412799
URI: http://eprints.soton.ac.uk/id/eprint/412799
ISSN: 0955-7997
PURE UUID: adf6df55-052d-4594-95bf-88ad6af96f52

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Date deposited: 01 Aug 2017 16:31
Last modified: 07 Oct 2020 06:06

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