Modeling Curved Carbon Fiber Composite (CFC) Structures in the Transmission-Line Modeling (TLM) Method

TL;DR

This paper introduces a novel embedded modeling approach for curved CFC structures within the TLM method, improving computational efficiency and accuracy in electromagnetic simulations of complex geometries.

Contribution

The paper presents a new embedded model for curved thin panels in TLM that simplifies geometry representation and reduces computational resources.

Findings

Model accurately predicts resonant frequencies of CFC structures

Reduces run time and memory requirements

Effectively analyzes shielding performance of CFC airfoils

Abstract

A new embedded model for curved thin panels is developed in the Transmission Line Modeling (TLM) method. In this model, curved panels are first linearized and then embedded between adjacent 2D TLM nodes allowing for arbitrary positioning between adjacent node centers. The embedded model eliminates the necessity for fine discretization thus reducing the run time and memory requirements for the calculation. The accuracy and convergence of the model are verified by comparing the resonant frequencies of an elliptical cylinder formed using carbon fiber composite (CFC) materials with those of the equivalent metal cylinder. Furthermore, the model is used to analyze the shielding performance of CFC airfoil NACA2415.