• Polarisations of quasi-waves in a general anisotropic porous solid saturated with viscous fluid

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    • Keywords


      Anisotropy; poroelasticity; polarisation; attenuation

    • Abstract


      Wave propagation is studied in a general anisotropic poroelastic solid saturated with a viscous fluid flowing through its pores of anisotropic permeability. The extended version of Biot’s theory is used to derive a system of modified Christoffel equations for the propagation of plane harmonic waves in such media. The non-trivial solution of this system is ensured by a biquadratic equation whose roots represent the complex velocities of four attenuating quasi-waves in the medium. These complex velocities define phase velocity and attenuation of each quasi-wave propagating along a given phase direction in three-dimensional space. The solution itself defines the polarisations of the quasi-waves along with phase shift. The variations of polarisations of quasi-waves with their phase direction, are computed for a realistic numerical model.

    • Author Affiliations


      M D Sharma1

      1. Department of Mathematics, Kurukshetra University - 136 119, India
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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