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, non-isothermal flows in fractured-porous 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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