U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting Charleston South Carolina March 8-12, 1999--Volume 3 of 3--Subsurface Contamination From Point Sources, Water-Resources Investigations Report 99-4018C

Simulation of Mass Transport Using the FracTran98 Module of FracSys2000

By David M. Diodato

Abstract

FracTran98 is the transport module of FracSys2000, a new suite of simulation tools for modeling flow and transport in multiphase or single phase, fractured or unfractured porous media. FracTran98 simulates transport by advection alone or by coupled advection-dispersion in a one- or two-phase flow field. An optional immobile "free" phase may be present. Linear kinetic partitioning between the mobile phases and the immobile free and solid phases is supported. An example of toluene contamination in the unsaturated zone shows that sluggish kinetics can substantially extend the time required for remediation in porous media. FracSys2000 also includes a flow module (FracFlow96), and a visualization module (FracVis98).