Anisotropy of tracer dispersion in rough model fractures with sheared walls

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dc.creatorBoschan, Alejandro
dc.creatorAuradou, Harold
dc.creatorIppolito, Irene
dc.creatorChertcoff, Ricardo
dc.creatorHulin, Jean-Pierre
dc.date2008-10-02
dc.date.accessioned2026-07-07T10:07:11Z
dc.date.available2026-07-07T10:07:11Z
dc.descriptionDispersion experiments are compared for two transparent model fractures with identical complementary rough walls but with a relative shear displacement $\vecδ$ parallel ($\vecδ\parallel \vec{U}$) or perpendicular ($\vecδ \perp \vec{U}$) to the flow velocity $\vec{U}$. The structure of the mixing front is characterized by mapping the local normalized local transit time $\bar t(x,y)$ and dispersivity $α(x,y)$. For $\vecδ \perp \vec{U}$, displacement fronts display large fingers: their geometry and the distribution of $\bar t(x,y)U/x$ are well reproduced by assuming parallel channels of hydraulic conductance deduced from the aperture field. For $\vecδ \parallel \vec{U}$, the front is flatter and $α(x,y)$ displays a narrow distribution and a Taylor-like variation with $Pe$.
dc.identifierhttps://arxiv.org/abs/0810.0519
dc.identifierhttp://arxiv.org/abs/0810.0519
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170543
dc.subjectGeophysics
dc.subjectFluid Dynamics
dc.titleAnisotropy of tracer dispersion in rough model fractures with sheared walls
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