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- W2952209031 abstract "An important upscaling effect in heterogeneous poroelastic Biot media is the dissipationmechanism due to wave-induced fluid flow caused by mesoscopic scale heterogeneities, which are largerthan the pore size but much smaller than the average wavelengths of the fast waves in the seismic range offrequencies. To perform numerical simulations using Biot’s equations of motion, it would be necessaryto employ extremely fine meshes to properly represent these mesoscopic heterogeneities. An alternativeapproach to model this type of Biot medium is to determine effective complex moduli defining locallya viscoelastic medium having in the average the same properties than the original medium. This workpresents a finite element procedure combined with a Montecarlo approach to estimate the effective phasevelocity and mesoscopic attenuation in highly heterogeneous porous rocks. The method involves the useof stochastic fractals to generate different stochastic parameter patterns within the porous sample. Foreach realization of the stochastic parameters, a local boundary value problem is solved on a representativevolume of bulk material. Numerical experiments showing the implementation of the procedure arepresented." @default.
- W2952209031 created "2019-06-27" @default.
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- W2952209031 date "2007-01-01" @default.
- W2952209031 modified "2023-09-27" @default.
- W2952209031 title "A Numerical Procedure To Estimate The Effective Moduli In Highly Heterogeneous Fluid-Saturated Porous Media" @default.
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