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L E G A C Y
Citation URL: http://www.osti.gov/geothermal/product.biblio.jsp?osti_id=10197050
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| Title: |
TOUGH2. Unsaturated Groundwater and Heat Transport Model |
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| Creator/Author: |
Pruess, K. [Lawrence Berkeley National Lab., CA (United States)]
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| Publication Date: | 1991 May 01 |
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| OSTI Identifier: | OSTI 10197050 |
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| Report Number(s): | ESTSC--000219I600000; NESC--1098 |
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| DOE Contract Number: | AC03-76SF00098 |
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| Document Type: | Miscellaneous |
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| Specific Type: | |
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| Coverage: | Software Manual |
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| Resource Relation: | Other Information: PBD: 1 May 1991 |
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| Other Number(s): | |
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| Research Org: | Lawrence Berkeley Lab., CA (United States) |
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| Sponsoring Org: | Not Available |
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| Subject: | 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 42 ENGINEERING; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 15 GEOTHERMAL ENERGY; T CODES; MULTIPHASE FLOW; POROUS MATERIALS; COMPUTER PROGRAM DOCUMENTATION; HEAT FLUX; EQUATIONS OF STATE; RADIOACTIVE WASTE DISPOSAL; GEOTHERMAL FLUIDS; HYDROLOGY; GEOTHERMAL SYSTEMS; FINITE DIFFERENCE METHOD |
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| Keywords: | Geothermal Legacy |
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| Description/Abstract: | TOUGH2 is a new and improved version of TOUGH. TOUGH2 offers added capabilities and user features, including the flexibility to handle different fluid mixtures (water, water with tracer; water, CO2; water, air; water, air, with vapor pressure lowering and water, hydrogen), facilities for processing of geometric data (computational grids), and an internal version control system to ensure referenceability of code applications. TOUGH2 is a multi-dimensional numerical model for simulating the coupled transport of water, vapor, air, and heat in porous and fractured media. The program provides options for specifying injection or withdrawal of heat and fluids. Although primarily designed for studies of high-level nuclear waste isolation in partially saturated geological media, it should also be useful for a wider range of problems in heat and moisture transfer, and in the drying of porous materials. For example, geothermal reservoir simulation problems can be handled simply by setting the air mass function equal to zero on input. The TOUGH2 simulator was developed for problems involving strongly heat-driven flow. To describe these phenomena a multi-phase approach to fluid and heat flow is used, which fully accounts for the movement of gaseous and liquid phases, their transport of latent and sensible heat, and phase transitions between liquid and vapor. TOUGH2 takes account of fluid flow in both liquid and gaseous phases occurring under pressure, viscous, and gravity forces according to Darcy`s law. Interference between the phases is represented by means of relative permeability functions. The code handles binary, but not Knudsen, diffusion in the gas phase and capillary and phase adsorption effects for the liquid phase. Heat transport occurs by means of conduction with thermal conductivity dependent on water saturation, convection, and binary diffusion, which includes both sensible and latent heat. |
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| Publisher: | |
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| Country of Publication: | US |
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| Language: | English |
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| Size/Format: | Medium: ED; Quantity: 1 3.5 Diskette; OS: Operating System-Independent (Requires 64 bit compiler); Compatibility: IBM RS 6000 |
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| Rights: | |
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| Availability: | ESTSC |
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| System Entry Date: | 2012 May 03 |
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