iTOUGH2

Category  Geothermal 
Publisher  Lawrence Berkeley Laboratory 
Platform  Win95/98, WinNT, Win2000, WinXP, Mac, PowerMac, UNIX 
Status  Public domain 
Description  iTOUGH2 (inverse TOUGH2) is a computer program that provides inverse modeling capabilities for the TOUGH2 code, a simulator for multiphase, multicomponent, nonisothermal flows in fracturedporous media. It solves the inverse problem by automatically calibrating a TOUGH2 model against observed data. Any input parameter can be estimated based on any observation for which a corresponding output can be calculated. An objective function measures the difference between the model calculation and the observed data, and a minimization algorithm proposes new parameter sets that iteratively improve the match. Once the best estimate parameter set is identified, it performs an error analysis which provides statistical information about residuals, estimation uncertainties, and the ability to discriminate among model alternatives. An uncertainty propagation analysis allows one to quantify prediction errors. It runs in three application modes: Sensitivity Analysis; Parameter Estimation; Uncertainty Propagation Analysis. 
Cost  Varies from free to US Dollars 6,000 
Data formats supported  None stated 
Supplier in United States of America  Energy Science and Technology Software Center 
Supplier in United States of America  Lawrence Berkeley Laboratory 
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