干旱区生态环境知识资源中心(Arid): Murt user`s guide: A hybrid Lagrangian-Eulerian finite element model of multiple-pore-region solute transport through subsurface media

Arid

DOI	10.2172/92060
报告编号	ORNL/GWPO--015; ORNL/M--4592
来源ID	OSTI_ID: 92060
	Murt user`s guide: A hybrid Lagrangian-Eulerian finite element model of multiple-pore-region solute transport through subsurface media
	Gwo, J.P.; Jardine, P.M. [Oak Ridge National Lab., TN (United States)]; Yeh, G.T. [Pennsylvania State Univ., University Park, PA (United States) Department of Civil and Environmental Engineering]; Wilson, G.V. [Tennessee Univ., Knoxville, TN (United States). Dept. of Plant and Soil Science]
英文摘要	Matrix diffusion, a diffusive mass transfer process,in the structured soils and geologic units at ORNL, is believe to be an important subsurface mass transfer mechanism; it may affect off-site movement of radioactive wastes and remediation of waste disposal sites by locally exchanging wastes between soil/rock matrix and macropores/fractures. Advective mass transfer also contributes to waste movement but is largely neglected by researchers. This report presents the first documented 2-D multiregion solute transport code (MURT) that incorporates not only diffusive but also advective mass transfer and can be applied to heterogeneous porous media under transient flow conditions. In this report, theoretical background is reviewed and the derivation of multiregion solute transport equations is presented. Similar to MURF (Gwo et al. 1994), a multiregion subsurface flow code, multiplepore domains as suggested by previous investigators (eg, Wilson and Luxmoore 1988) can be implemented in MURT. Transient or steady-state flow fields of the pore domains can be either calculated by MURF or by modelers. The mass transfer process is briefly discussed through a three-pore-region multiregion solute transport mechanism. Mass transfer equations that describe mass flux across pore region interfaces are also presented and parameters needed to calculate mass transfer coefficients detailed. Three applications of MURT (tracer injection problem, sensitivity analysis of advective and diffusive mass transfer, hillslope ponding infiltration and secondary source problem) were simulated and results discussed. Program structure of MURT and functions of MURT subroutiness are discussed so that users can adapt the code; guides for input data preparation are provided in appendices.
出版年	1995
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS ; SOLUTES ; ENVIRONMENTAL TRANSPORT ; M CODES ; RADIOACTIVE WASTE DISPOSAL ; UNDERGROUND DISPOSAL ; WASTE-ROCK INTERACTIONS ; ORNL ; MASS TRANSFER ; COMPUTER CODES ; POROUS MATERIALS
URL	http://www.osti.gov/scitech/servlets/purl/92060
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266096
推荐引用方式 GB/T 7714	Gwo, J.P.,Jardine, P.M. [Oak Ridge National Lab., TN ,Yeh, G.T. [Pennsylvania State Univ., University Park, PA ,et al. Murt user`s guide: A hybrid Lagrangian-Eulerian finite element model of multiple-pore-region solute transport through subsurface media,1995.