An Evaluation of Polarisability Tensors of Arbitrarily Shaped Highly Conducting Bodies

TL;DR

This paper introduces a comprehensive numerical method for evaluating the polarisability tensors of arbitrarily shaped highly conducting bodies, accounting for radiation and ohmic losses, and provides a verified, user-friendly implementation.

Contribution

It presents a novel full-wave numerical scheme capable of handling arbitrary shapes and losses, with an accessible code for practical applications.

Findings

Method accurately computes polarisability tensors for canonical shapes.

The scheme is validated against known analytical results.

The implementation is user-friendly and adaptable to complex geometries.

Abstract

A full-wave numerical scheme of polarisability tensors evaluation is presented. The method accepts highly conducting bodies of arbitrary shape and explicitly accounts for the radiation as well as ohmic losses. The method is verified on canonical bodies with known polarisability tensors, such as a sphere and a cube, as well as on realistic scatterers. The theoretical developments are followed by a freely available code whose sole user input is the triangular mesh covering the surface of the body under consideration.