期刊
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
卷 31, 期 -, 页码 198-213出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2016.03.019
关键词
Underground hydrogen storage; Riemann problem; Shock waves; Analytical solution; Multi-component flow; Gas rising; Method of characteristics; Two-phase flow; Gravity-driven flow
资金
- German Federal Ministry of Education and Research [03SF0434C]
- Ministry for Environment Natural Conservation and Reactor Security
- Ministry for Economy and Technology within project H2STORE: Investigation into Geohydraulic, Mineralogical, Geochemical and Biogenic Interactions by Underground Storage of Hydrogen in Converted Gas Reservoirs
The exact analytical solutions have been obtained for the problem of the gravity-driven rising of gas stored in a stratified aquifer. The practical objective is to retard gas rising in order to avoid its consecutive losses, which is ensured by low permeable horizontal barriers. The problem of gas rising through water is formulated as the Riemann problem for a system of first-order hyperbolic flow equations coupled with nonlinear algebraic equations describing the dissolution of chemical components in gas and water. The interaction of the forward front of gas with a barrier represents a collision between a shock wave and a medium discontinuity, which produces reverse shock waves and significantly retards gas rising. The method of solution is a combination between the method of characteristics and the technique of geometrical diagrams for coherent waves. The exact analytical solution was constructed for two- and three-component cases. The two-dimensional flow was studied numerically. (C) 2016 Elsevier B.V. All rights reserved.
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