caa a22 4500 463177606 CHVBK 20180406164829.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10596-006-9040-8 doi (NATIONALLICENCE)springer-10.1007/s10596-006-9040-8 Ryzhik Victor Department of Civil Engineering, The Technion, 32000, Haifa, Israel aut Spreading of a NAPL lens in a double-porosity medium [Elektronische Daten] [Victor Ryzhik] Spreading of a non-aqueous phase liquid (NAPL) denser than water (DNAPL) lens (mound) in the unsaturated zone of double-porosity aquifer above an impervious plane boundary is investigated. The double-porosity aquifer is conceptualized as a fracture network surrounding pervious blocks. Vertical gravity equilibrium is assumed to prevail in each one of the two media, fractures and blocks. Through vertical integration, two coupled partial differential equations for the DNAPL content in each medium are obtained. The mass exchange rate between high- and low-permeability media is considered as a function of NAPL content. The dominant effect is gravity, whereas capillary forces are negligible. Analytical solutions for one-dimensional and axisymmetric problems of mound spreading are obtained. Springer Science+Business Media, Inc., 2007 aquifer contamination nationallicence double-porosity medium nationallicence NAPL mound spreading nationallicence unsaturated zone nationallicence Computational Geosciences Kluwer Academic Publishers 11/1(2007-03-01), 1-8 1420-0597 11:1<1 2007 11 10596 https://doi.org/10.1007/s10596-006-9040-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10596-006-9040-8 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ryzhik Victor Department of Civil Engineering, The Technion, 32000, Haifa, Israel aut NATIONALLICENCE 773 0- Computational Geosciences Kluwer Academic Publishers 11/1(2007-03-01), 1-8 1420-0597 11:1<1 2007 11 10596 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer