GGSD Program Details for iTOUGH2

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, 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