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A particle method for two-phase flows with compressible air pocket

M. Luo, C. G. Koh, W. Bai, M. Gao, Min Luo Orcid Logo

International Journal for Numerical Methods in Engineering, Volume: 108, Issue: 7, Pages: 695 - 721

Swansea University Author: Min Luo Orcid Logo

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DOI (Published version): 10.1002/nme.5230

Abstract

When using particle methods to simulate water-air flows with compressible air pockets, a major challenge is to deal with the large differences in physical properties (e.g. density and viscosity) between water and air. In addition, the accurate modelling of air compressibility is essential. To this e...

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Published in: International Journal for Numerical Methods in Engineering
ISSN: 0029-5981
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa36810
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first_indexed 2017-11-16T20:20:02Z
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spelling 2019-06-10T15:50:19.2560477 v2 36810 2017-11-16 A particle method for two-phase flows with compressible air pocket 91e3463c73c6a9d1f5c025feebe4ad0f 0000-0002-6688-9127 Min Luo Min Luo true false 2017-11-16 GENG When using particle methods to simulate water-air flows with compressible air pockets, a major challenge is to deal with the large differences in physical properties (e.g. density and viscosity) between water and air. In addition, the accurate modelling of air compressibility is essential. To this end, a new two-phase strategy is proposed to simulate incompressible and compressible fluids simultaneously without iterations between the solvers for incompressible and compressible flows. Water is modeled by the recently developed 2-phase Consistent Particle Method (2P-CPM) for incompressible flows. For air modeling, a new compressible solver is proposed based on the ideal gas law and thermodynamics. The formulation avoids the problem of determining the actual sound speed which is dependent on the temperature and is therefore not necessarily constant. In addition, the compressible air solver is seamlessly integrated with the incompressible solver 2P-CPM because they both use the same predictor-corrector scheme to solve the governing equations. The performance of the proposed method is demonstrated by three benchmark problems as well as an experimental study of sloshing impact with entrapped air pockets in an oscillating tank. Journal Article International Journal for Numerical Methods in Engineering 108 7 695 721 0029-5981 compressibility; two-phase flow; air pocket; polytropic gas law; particle method 16 11 2016 2016-11-16 10.1002/nme.5230 https://e-space.mmu.ac.uk/617941/ COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2019-06-10T15:50:19.2560477 2017-11-16T18:44:30.4906026 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering M. Luo 1 C. G. Koh 2 W. Bai 3 M. Gao 4 Min Luo 0000-0002-6688-9127 5
title A particle method for two-phase flows with compressible air pocket
spellingShingle A particle method for two-phase flows with compressible air pocket
Min Luo
title_short A particle method for two-phase flows with compressible air pocket
title_full A particle method for two-phase flows with compressible air pocket
title_fullStr A particle method for two-phase flows with compressible air pocket
title_full_unstemmed A particle method for two-phase flows with compressible air pocket
title_sort A particle method for two-phase flows with compressible air pocket
author_id_str_mv 91e3463c73c6a9d1f5c025feebe4ad0f
author_id_fullname_str_mv 91e3463c73c6a9d1f5c025feebe4ad0f_***_Min Luo
author Min Luo
author2 M. Luo
C. G. Koh
W. Bai
M. Gao
Min Luo
format Journal article
container_title International Journal for Numerical Methods in Engineering
container_volume 108
container_issue 7
container_start_page 695
publishDate 2016
institution Swansea University
issn 0029-5981
doi_str_mv 10.1002/nme.5230
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
url https://e-space.mmu.ac.uk/617941/
document_store_str 0
active_str 0
description When using particle methods to simulate water-air flows with compressible air pockets, a major challenge is to deal with the large differences in physical properties (e.g. density and viscosity) between water and air. In addition, the accurate modelling of air compressibility is essential. To this end, a new two-phase strategy is proposed to simulate incompressible and compressible fluids simultaneously without iterations between the solvers for incompressible and compressible flows. Water is modeled by the recently developed 2-phase Consistent Particle Method (2P-CPM) for incompressible flows. For air modeling, a new compressible solver is proposed based on the ideal gas law and thermodynamics. The formulation avoids the problem of determining the actual sound speed which is dependent on the temperature and is therefore not necessarily constant. In addition, the compressible air solver is seamlessly integrated with the incompressible solver 2P-CPM because they both use the same predictor-corrector scheme to solve the governing equations. The performance of the proposed method is demonstrated by three benchmark problems as well as an experimental study of sloshing impact with entrapped air pockets in an oscillating tank.
published_date 2016-11-16T03:46:10Z
_version_ 1763752196199940096
score 11.037275

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