Peng, C, Xu, G, Wu, W et al. (2 more authors) (2017) Multiphase SPH modeling of free surface flow in porous media with variable porosity. Computers and Geotechnics, 81. pp. 239-248. ISSN 0266-352X
Abstract
This paper presents a numerical model for simulating free surface flow in porous media with spatially varying porosity. The governing equations are based on the mixture theory. The resistance forces between solid and fluid is assumed to be nonlinear. A multiphase SPH approach is presented to solve the governing equations. In the multiphase SPH, water is modeled as a weakly compressible fluid, and solid phase is discretized by fixed solid particles carrying information of porosity. The model is validated by several numerical examples including seepage through specimen, fast flow through rockfill dam and wave interaction with porous structure. Good agreements between numerical results and experimental data are obtained in terms of flow rate and evolution of free surface. Parameter study shows that (1) the nonlinear resistance law provides more accurate results; (2) particle size and porosity have significant influence on the porous flow.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Free surface flow; Porous media; Mixture theory; Resistance law; Delta-SPH |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Apr 2017 11:08 |
Last Modified: | 11 Jan 2023 13:00 |
Published Version: | https://doi.org/10.1016/j.compgeo.2016.08.022 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.compgeo.2016.08.022 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115175 |