STOMP Course

Problem 7 – DNAPL vapor behavior in unsaturated porous media

Abstract: Density effects may be important when contaminant vapors are moved through the subsurface. Volatile organic compounds with a relatively high molecular weight such at trichloroethene (TCE) and carbon tetrachloride may cause density differences to occur in the gas phase. An example is presented that allows the user to investigate when density effects may be important. The user is also asked to develop a soil vapor extraction system that accelerates the removal of a residual NAPL source. The object of this problem is to introduce the user to transport of organic components in the gaseous phase. The Water-Air-Oil mode (STOMP5) is used for this application.