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Titel (primär) Influence of source thickness on steady-state plume length
Autor Yadav, P.K.; Liedl, R.; Dietrich, P.;
Journal / Serie Environmental Earth Sciences
Erscheinungsjahr 2014
Department MET;
Band/Volume 71
Heft 2
Sprache englisch;
POF III (gesamt) T53;
UFZ Querschnittsthemen RU5;
Abstract The impact of source thickness on steady-state plume length is studied using modifications of the analytical expressions provided in Liedl et al. (2005, 2011) for 2D and 3D scenarios. For comparison, 2D and 3D numerical experiments were performed, and the following three important conclusions were obtained: first, the modified expressions overestimate the plume length only up to a factor of 2 when the source thickness (M s ) is at least 50 % of the aquifer depth (M). Second, overestimates do not exceed plume length by a factor of 10 (2D scenario) or 5 (3D scenario) for 25 % < M s /M < 50 %. Third, numerical techniques are recommended for M s  < 25 %. In addition, it was observed that the degradation from the top dominates for M s /M > 50 %. As far as the numerical experiments are concerned, it is important to note that the employed finite element approach was applied to the transformed transport equation provided in both Liedl et al. works. This transformation, which can also be applied to more complex scenarios than those studied here, eliminates reaction terms from the model equations and therefore largely facilitates numerical computations.
ID 14540
dauerhafte UFZ-Verlinkung
Yadav, P.K., Liedl, R., Dietrich, P. (2014):
Influence of source thickness on steady-state plume length
Environ. Earth Sci. 71 (2), 959 - 964