The article analyzes computations of low-frequency electrodynamic fields in a nonhomogeneous conducting medium using the integral equation method. Contrast effects arise when the nonhomogeneities are embedded in a low-conductivity medium. As the conductivity of the enclosing medium decreases, tighter grid spacing is required in the nonhomogeneous region.
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V. I. Dmitriev and E. V. Zakharov, Integral Equation Method in Computational Electrodynamics [in Russian], MAKSPress, Moscow (2008).
V. I. Dmitriev, Marine Electromagnetic Soundings [in Russian], Argamak Media, Moscow (2004).
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Translated from Prikladnaya Matematika i Informatika, No. 54, 2017, pp. 50–56.
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Dmitriev, V.I. The Integral-Equation Method in Low-Frequency Electrodynamics of Nonhomogeneous Contrast Media. Comput Math Model 29, 42–47 (2018). https://doi.org/10.1007/s10598-018-9386-5
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DOI: https://doi.org/10.1007/s10598-018-9386-5