Dissolution of nonaqueous phase liquid pools in anisotropic aquifersDissolution of nonaqueous phase liquid pools in anisotropic aquifers Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-09-232001en 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. http://creativecommons.org/licenses/by/4.0/Stochastic Environmental Research and Risk Assessment15133-46A35-SERRA-01.pdfChania [Greece]Library of TUC2015-09-23application/pdf224.4 kBfree Chrysikopoulos Constantinos Χρυσικοπουλος Κωνσταντινος E .T Vogler