TMVOC, A SIMULATOR FOR MULTIPLE VOLATILE ORGANIC CHEMICALS

Karsten Pruess and Alfredo Battistelli

Contact: Karsten Pruess, 510/486-6732, k_pruess@lbl.gov

Research Objectives
Many environmental contamination problems involve volatile organic chemicals (VOCs), such as crude oil, gasoline, diesel, and/or organic solvents. When spilled into the unsaturated zone, these chemicals may form a separate nonaqueous phase, giving rise to three-phase flow of water, soil gas, and a nonaqueous phase liquid (NAPL). Suchflows can be modeled with T2VOC, but that code is limited to conditions in which the VOC is a pure, single-component fluid. However, in many cases of interest, nonaqueous fluids released into the subsurface may consist of a multicomponent mixture of several different chemicals. TMVOC is designed for three-phase flows in which the NAPL consists of a general multicomponent mixture of organic fluids. In addition, one or several noncondensable gases (NCGs) may be present.

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