%0 Conference Proceedings %T Eulerian simulations to assess dispersion for transport through 2D correlated porous media %+ Indian Institute of Technology Kharagpur (IIT Kharagpur) %+ Institute of Environmental Assessment and Water Research (IDAEA) %+ Royal Melbourne Institute of Technology University (RMIT University) %+ Géosciences Rennes (GR) %A Singh, Prajwal %A Dentz, Marco %A Lester, Daniel, R. %A Le Borgne, Tanguy %A Bandopadhyay, Aditya %< avec comité de lecture %B European Geosciences Union General Assembly 2019 %C Vienne, Austria %3 Geophysical Research Abstracts %V 21 %P EGU2019-15087 %8 2019-04-07 %D 2019 %Z Sciences of the Universe [physics]/Earth Sciences/Hydrology %Z Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]Conference papers %X Transport through 2D correlated porous media has been shown to induce mixing through deformation of materialelements owing to the heterogeneity in the flow fields [1]. The stretching of line elements brings about an increasein the area for reaction and increases the diffusive flux through the thinning of the direction transverse to stretchingand is thought to be an important mechanism to determine hotspots of mixing in various flow conditions [2]. Thesemechanisms are useful to quantify the extent of reaction for fast reactive fluids wherein the local reactivity maybe obtained through the information gained from the gradient maps of a conservative tracer. Unlike earlier workswhich have primarily focussed on a Lagrangian approach for quantifying dispersion, we attempt to establish thedispersion rates in the transport through a porous media by means of fully resolved Eulerian simulations forthe typical Peclet numbers (ratio of the diffusion time to the advection time) encountered in transport throughporous media. The observations do indicate that the dispersion has a strong dependence on the Peclet number andcorrelation length for lognormal conductivity fields. This approach will helps us alleviate the problems of binningand coarse graining that the Lagrangian methods suffer from.[1] Borgne, Tanguy Le, Timothy R. Ginn, and Marco Dentz. "Impact of fluid deformation on mixing-inducedchemical reactions in heterogeneous flows." Geophysical Research Letters 41.22 (2014): 7898-7906[2] Bandopadhyay, Aditya, Philippe Davy, and Tanguy Le Borgne. "Shear flows accelerate mixing dynamics inhyporheic zones and hillslopes." Geophysical Research Letters 45.21 (2018): 11-659 %G English %L insu-02090876 %U https://insu.hal.science/insu-02090876 %~ INSU %~ UNIV-RENNES1 %~ UR2-HB %~ CNRS %~ GR %~ OSUR %~ GIP-BE %~ UR1-HAL %~ UR1-SDLM %~ GR-DIMENV %~ UNIV-RENNES2 %~ OSUR-OSU %~ TEST-UR-CSS %~ UNIV-RENNES %~ INRAE %~ UR1-ENV %~ GR-TERA %~ TEST3-HALCNRS %~ TEST4-HALCNRS %~ TEST5-HALCNRS