A Broadband 3-D Numerical FEM Study on the Characterization of Dielectric Relaxation Processes in Soils

TL;DR

This paper presents a comprehensive 3D numerical FEM analysis of dielectric relaxation processes in soils across a broad frequency range, aiming to connect material properties with observed dielectric spectra.

Contribution

It introduces a novel broadband 3D FEM approach to characterize dielectric relaxation in soils, addressing the complexity of multi-phase porous materials.

Findings

Identifies limitations of FEM in modeling soil dielectric behavior.

Demonstrates the potential of FEM for parameterizing relaxation spectra.

Provides insights into the influence of soil properties on dielectric relaxation.

Abstract

Soil as a complex multi-phase porous material typical exhibits several distributed relaxation processes in the frequency range from 1 MHz to approximately 10 GHz of interest in applications. To relate physico-chemical material parameters to the dielectric relaxation behavior, measured dielectric relaxation spectra have to be parameterized. In this context, a broadband numerical 3D FEM study was carried out to analyze the possibilities and limitations in the characterization of the relaxation processes in complex systems.