气候变化领域集成服务门户(CCPortal): HYDROGEOCHEM: A Coupled Model of Variably Saturated Flow, Thermal Transport, and Reactive Biogeochemical Transport

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	HYDROGEOCHEM: A Coupled Model of Variably Saturated Flow, Thermal Transport, and Reactive Biogeochemical Transport
	Yeh, G. T.; Tripathi, V. S.; Gwo, J. P.; Cheng, H. P.; Cheng, J. -R. C.; Salvage, K. M.; Li, M. H.; Fang, Y.; Li, Y.; Sun, J. T.; Zhang, F.; Siegel, M. D.
通讯作者	Yeh, GT (通讯作者)
发表日期	2012
起始页码	3
结束页码	41
英文摘要	This chapter presents the development of the latest version of HYDROGEOCHEM a multi-dimensional numerical model of coupled fluid flow, thermal transport, hydrologic transport, and biogeochemical kinetic/equilibrium reactions in saturated/unsaturated media. It iteratively solves the Richards equation for fluid flow, the thermal transport equation for temperature fields, and reactive biogeochemical transport equations for concentration distributions. For the latter, the advective-dispersive-reactive transport equations are solved for mobile components and kinetic variables. The biogeochemical reaction equations along with the component-and kinetic-variable equations are solved for concentration distributions of all species. This version of HYDROGEOCHEM is designed for generic applications to reactive transport problems under non-isothermal conditions in subsurface media. It considers all types of reactions (aqueous complexation, adsorption-desorption, precipitation-dissolution, ion-exchange, hydrolysis, and abiotic and biotic-mediated redox) as both fast/equilibrium and/or slow/kinetic processes, using a consistent definition of fast/equilibrium reaction rates. Input to the program includes the finite element numerical representation of the system, the properties of the media, reaction network, and initial and boundary conditions. Output includes the spatial distributions of pressure and total heads, velocity fields, moisture contents, temperature, and biogeochemical concentrations at user specified times and locations (finite element nodes). Six examples are employed to demonstrate the design capabilities of HYDROGEOCHEM, to illustrate the calculations of fast/equilibrium reaction rates, and to highlight the non-intuitive notion that the rates of slow/kinetic reactions are not necessarily smaller than those of fast/equilibrium reactions.
关键词	SOLUTE TRANSPORT POROUS-MEDIA MULTICOMPONENT TRANSPORT CONTAMINANT TRANSPORT OSMOTIC COEFFICIENTS CHEMICAL-TRANSPORT GROUNDWATER URANIUM THERMODYNAMICS ELECTROLYTES
英文关键词	Reactive transport models; biogeochemical models; numerical biogeochemical transport model; variably saturated flow; thermal transport
语种	英语
WOS研究方向	Geology ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000427246700003
来源期刊	GROUNDWATER REACTIVE TRANSPORT MODELS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258093
推荐引用方式 GB/T 7714	Yeh, G. T.,Tripathi, V. S.,Gwo, J. P.,et al. HYDROGEOCHEM: A Coupled Model of Variably Saturated Flow, Thermal Transport, and Reactive Biogeochemical Transport[J]. 中国科学院青藏高原研究所,2012.
APA	Yeh, G. T..,Tripathi, V. S..,Gwo, J. P..,Cheng, H. P..,Cheng, J. -R. C..,...&Siegel, M. D..(2012).HYDROGEOCHEM: A Coupled Model of Variably Saturated Flow, Thermal Transport, and Reactive Biogeochemical Transport.GROUNDWATER REACTIVE TRANSPORT MODELS.
MLA	Yeh, G. T.,et al."HYDROGEOCHEM: A Coupled Model of Variably Saturated Flow, Thermal Transport, and Reactive Biogeochemical Transport".GROUNDWATER REACTIVE TRANSPORT MODELS (2012).