Dissolution of nonaqueous phase liquid pools in anisotropic aquifers

E. T. Vogler, C. V. Chrysikopoulos

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A two-dimensional numerical transport model is developed to determine the effect of aquifer anisotropy and heterogeneity on mass transfer from a dense nonaqueous phase liquid (DNAPL) pool. The appropriate steady state groundwater flow equation is solved implicitly whereas the equation describing the transport of a sorbing contaminant in a confined aquifer is solved by the alternating direction implicit method. Statistical anisotropy in the aquifer is introduced by two-dimensional, random log-normal hydraulic conductivity field realizations with different directional correlation lengths. Model simulations indicate that DNAPL pool dissolution is enhanced by increasing the mean log-transformed hydraulic conductivity, groundwater flow velocity, and/or anisotropy ratio. The variance of the log-transformed hydraulic conductivity distribution is shown to be inversely proportional to the average mass transfer coefficient.

Original languageBritish English
Pages (from-to)33-46
Number of pages14
JournalStochastic Environmental Research and Risk Assessment
Issue number1
StatePublished - 2001


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