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| Title: |
ITOUGH2 sample problems |
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| Creator/Author: |
Finsterle, S.
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| Publication Date: | 1997 Nov 01 |
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| OSTI Identifier: | OSTI 334371 |
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| Report Number(s): | LBNL--40042 |
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| DOE Contract Number: | AC03-76SF00098 |
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| Document Type: | Technical Report |
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| Specific Type: | |
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| Coverage: | |
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| Resource Relation: | Other Information: PBD: Nov 1997 |
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| Other Number(s): | |
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| Research Org: | Lawrence Berkeley National Lab., Earth Sciences Div., CA (United States) |
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| Sponsoring Org: | USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States);USDOE Office of Civilian Radioactive Waste Management, Washington, DC (United States);Swiss National Cooperative for the Storage of Nuclear Waste, Baden (Switzerland) |
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| Subject: | 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS;05 NUCLEAR FUELS ;15 GEOTHERMAL ENERGY ;58 GEOSCIENCES; I CODES; HYDRAULIC CONDUCTIVITY; PARAMETRIC ANALYSIS; SENSITIVITY ANALYSIS; DATA COVARIANCES; MULTIPHASE FLOW; FRACTURED RESERVOIRS; POROUS MATERIALS; GEOTHERMAL SYSTEMS; RADIOACTIVE WASTE DISPOSAL; COMPUTER PROGRAM DOCUMENTATION |
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| Keywords: | Geothermal Legacy |
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| Description/Abstract: | This report contains a collection of ITOUGH2 sample problems. It complements the ITOUGH2 User`s Guide [Finsterle, 1997a], and the ITOUGH2 Command Reference [Finsterle, 1997b]. ITOUGH2 is a program for parameter estimation, sensitivity analysis, and uncertainty propagation analysis. It is based on the TOUGH2 simulator for non-isothermal multiphase flow in fractured and porous media [Preuss, 1987, 1991a]. The report ITOUGH2 User`s Guide [Finsterle, 1997a] describes the inverse modeling framework and provides the theoretical background. The report ITOUGH2 Command Reference [Finsterle, 1997b] contains the syntax of all ITOUGH2 commands. This report describes a variety of sample problems solved by ITOUGH2. Table 1.1 contains a short description of the seven sample problems discussed in this report. The TOUGH2 equation-of-state (EOS) module that needs to be linked to ITOUGH2 is also indicated. Each sample problem focuses on a few selected issues shown in Table 1.2. ITOUGH2 input features and the usage of program options are described. Furthermore, interpretations of selected inverse modeling results are given. Problem 1 is a multipart tutorial, describing basic ITOUGH2 input files for the main ITOUGH2 application modes; no interpretation of results is given. Problem 2 focuses on non-uniqueness, residual analysis, and correlation structure. Problem 3 illustrates a variety of parameter and observation types, and describes parameter selection strategies. Problem 4 compares the performance of minimization algorithms and discusses model identification. Problem 5 explains how to set up a combined inversion of steady-state and transient data. Problem 6 provides a detailed residual and error analysis. Finally, Problem 7 illustrates how the estimation of model-related parameters may help compensate for errors in that model. |
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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: P; Size: 95 p. |
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| Rights: | |
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| Availability: | INIS; OSTI as DE99002435 |
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| System Entry Date: | 2008 Sep 08 |
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