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A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting / Dunhui Xiao, P. Yang, F. Fang, J. Xiang, C.C. Pain, I.M. Navon, M. Chen

Journal of Computational Physics, Volume: 330, Pages: 221 - 244

Swansea University Author: Dunhui Xiao

Abstract

This work presents the first application of a non-intrusive reduced order method to model solid interacting with compressible fluid flows to simulate crack initiation and propagation. In the high fidelity model, the coupling process is achieved by introducing a source term into the momentum equation...

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Published in: Journal of Computational Physics
ISSN: 0021-9991
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa46450
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spelling 2021-01-15T10:23:48.0720212 v2 46450 2018-12-06 A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting 62c69b98cbcdc9142622d4f398fdab97 0000-0003-2461-523X Dunhui Xiao Dunhui Xiao true false 2018-12-06 AERO This work presents the first application of a non-intrusive reduced order method to model solid interacting with compressible fluid flows to simulate crack initiation and propagation. In the high fidelity model, the coupling process is achieved by introducing a source term into the momentum equation, which represents the effects of forces of the solid on the fluid. A combined single and smeared crack model with the Mohr–Coulomb failure criterion is used to simulate crack initiation and propagation. The non-intrusive reduced order method is then applied to compressible fluid and fractured solid coupled modelling where the computational cost involved in the full high fidelity simulation is high. The non-intrusive reduced order model (NIROM) developed here is constructed through proper orthogonal decomposition (POD) and a radial basis function (RBF) multi-dimensional interpolation method.The performance of the NIROM for solid interacting with compressible fluid flows, in the presence of fracture models, is illustrated by two complex test cases: an immersed wall in a fluid and a blasting test case. The numerical simulation results show that the NIROM is capable of capturing the details of compressible fluids and fractured solids while the CPU time is reduced by several orders of magnitude. In addition, the issue of whether or not to subtract the mean from the snapshots before applying POD is discussed in this paper. It is shown that solutions of the NIROM, without mean subtracted before constructing the POD basis, captured more details than the NIROM with mean subtracted from snapshots. Journal Article Journal of Computational Physics 330 221 244 0021-9991 Non-intrusive, ROM, Compressible fluid–solid coupling, Fracturing, Blasting 1 2 2017 2017-02-01 10.1016/j.jcp.2016.10.068 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2021-01-15T10:23:48.0720212 2018-12-06T14:52:01.4770697 College of Engineering Engineering Dunhui Xiao 0000-0003-2461-523X 1 P. Yang 2 F. Fang 3 J. Xiang 4 C.C. Pain 5 I.M. Navon 6 M. Chen 7 0046450-13122018164552.pdf rbf-blasting.pdf 2018-12-13T16:45:52.9870000 Output 3704622 application/pdf Accepted Manuscript true 2018-12-13T00:00:00.0000000 true eng
title A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
spellingShingle A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
Dunhui, Xiao
title_short A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
title_full A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
title_fullStr A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
title_full_unstemmed A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
title_sort A non-intrusive reduced-order model for compressible fluid and fractured solid coupling and its application to blasting
author_id_str_mv 62c69b98cbcdc9142622d4f398fdab97
author_id_fullname_str_mv 62c69b98cbcdc9142622d4f398fdab97_***_Dunhui, Xiao
author Dunhui, Xiao
author2 Dunhui Xiao
P. Yang
F. Fang
J. Xiang
C.C. Pain
I.M. Navon
M. Chen
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container_title Journal of Computational Physics
container_volume 330
container_start_page 221
publishDate 2017
institution Swansea University
issn 0021-9991
doi_str_mv 10.1016/j.jcp.2016.10.068
college_str College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description This work presents the first application of a non-intrusive reduced order method to model solid interacting with compressible fluid flows to simulate crack initiation and propagation. In the high fidelity model, the coupling process is achieved by introducing a source term into the momentum equation, which represents the effects of forces of the solid on the fluid. A combined single and smeared crack model with the Mohr–Coulomb failure criterion is used to simulate crack initiation and propagation. The non-intrusive reduced order method is then applied to compressible fluid and fractured solid coupled modelling where the computational cost involved in the full high fidelity simulation is high. The non-intrusive reduced order model (NIROM) developed here is constructed through proper orthogonal decomposition (POD) and a radial basis function (RBF) multi-dimensional interpolation method.The performance of the NIROM for solid interacting with compressible fluid flows, in the presence of fracture models, is illustrated by two complex test cases: an immersed wall in a fluid and a blasting test case. The numerical simulation results show that the NIROM is capable of capturing the details of compressible fluids and fractured solids while the CPU time is reduced by several orders of magnitude. In addition, the issue of whether or not to subtract the mean from the snapshots before applying POD is discussed in this paper. It is shown that solutions of the NIROM, without mean subtracted before constructing the POD basis, captured more details than the NIROM with mean subtracted from snapshots.
published_date 2017-02-01T04:08:07Z
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