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000000431 0247_ $$2DOI$$a10.1023/A:1012070900742
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000000431 084__ $$2WoS$$aEngineering, Chemical
000000431 1001_ $$0P:(DE-HGF)0$$aMarinoschi, G.$$b0
000000431 245__ $$aAnalysis of the time behaviour of a diffusive transport in a stratified medium
000000431 260__ $$aDordrecht [u.a.]$$bSpringer Science + Business Media B.V$$c2002
000000431 300__ $$a365 - 384
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000000431 440_0 $$05830$$aTransport in Porous Media$$v45$$x0169-3913
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000000431 520__ $$aThe paper presents a study of the diffusive transport of passive solute plumes in a two-dimensional non-homogeneous depth stratified flow domain. All the properties of the process are expressed by depth dependent deterministic functions. The method of moments, combined with the method of Green functions are chosen to determine the relevant characteristics of the flow (mass, center of mass, variance, etc.) used to describe the behaviour of the transient motion. General relationships for the n-order concentration moments are proved. Further, it is derived that the transient motion defined by time-dependent parameters tends asymptotically at large time to a stable regime whose characteristics are determined, Consequently, under certain hypotheses, an equivalence between the mean original process and a Fickian diffusive transport at large time may be established. The time required by the process to reach its asymptotic behaviour is also calculated.
000000431 536__ $$0G:(DE-Juel1)FUEK257$$2G:(DE-HGF)$$aChemie und Dynamik der Geo-Biosphäre$$cU01$$x0
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000000431 65320 $$2Author$$amacrodispersion
000000431 65320 $$2Author$$adiffusion in stratified porous media
000000431 65320 $$2Author$$amethod of moments
000000431 7001_ $$0P:(DE-Juel1)129549$$aVereecken, H.$$b1$$uFZJ
000000431 773__ $$0PERI:(DE-600)1473676-7$$a10.1023/A:1012070900742$$gVol. 45, p. 365 - 384$$p365 - 384$$q45<365 - 384$$tTransport in porous media$$v45$$x0169-3913$$y2002
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000000431 9141_ $$y2002
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