An improved numerical solution of multiphase flow analysis in soil |
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| Affiliation: | 1. Department of Chemical Engineering, National Tsing Hua University, Taiwan;2. Department of Chemical and Material Engineering, National Yunlin University of Science and Technology University, Taiwan;3. Department of Chemical Engineering, National Taiwan University, Taiwan;1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;2. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China;1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2. Changjiang Institute of Survey, Planning, Design and Research, Changjiang Water Resources Commission, Wuhan 430010, China;3. School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China |
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| Abstract: | The present paper is concerned with a numerical solution for the analysis of coupled water, a non-aqueous phase liquid, and gas and heat flow in unsaturated and saturated soil. First, it briefly presents all the problem governing equations and then concentrates on the development of a robust numerical solution algorithm. It improves the solution procedure by extending the primary variable switching scheme so that it can also be used for multiphase flow analysis and by developing a method for reducing the usual numerical oscillations. Finally, a sample numerical analysis of a spill of diesel fuel in a box filled with partially water-saturated soil is presented. |
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