Coupled electrothermal two-dimensional model for lightning strike prediction and thermal modeling using the TLM method

Elkalsh, Ahmed; Sewell, Phillip; Benson, Trevor M.; Vukovic, Ana

Abstract

This paper presents a fully coupled two-dimensional (2-D) multiphysics model for predicting the location of the arc discharge and lightning channel, and modeling its thermal and electrical behavior as a highly conductive plasma channel. The model makes no assumptions on the physical location of the lightning channel but predicts its appearance purely from the electromagnetic (EM) field conditions. A heat diffusion model is combined with the time-varying nature of the EM problem where material properties switch from linear air material to a dispersive and nonlinear plasma channel. This multiphysics model is checked for self-consistency, stability, accuracy, and convergence on a canonical case where an arc channel is established between two metal electrodes upon exposure to an intensive electric field. The model is then applied to the 2-D study of a diverter strip for aircraft lightning protection.

Citation

Elkalsh, A., Sewell, P., Benson, T. M., & Vukovic, A. (2017). Coupled electrothermal two-dimensional model for lightning strike prediction and thermal modeling using the TLM method. IEEE Journal on Multiscale and Multiphysics Computational Techniques, 2, 38-48. https://doi.org/10.1109/JMMCT.2017.2683066

• Journal Article Type: Article
• Acceptance Date: Feb 26, 2017
• Publication Date: Mar 15, 2017
• Deposit Date: May 12, 2017
• Publicly Available Date: May 12, 2017
• Journal: IEEE Journal on Multiscale and Multiphysics Computational Techniques
• Electronic ISSN: 2379-8815
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Pages: 38-48
• DOI: https://doi.org/10.1109/JMMCT.2017.2683066
• Keywords: Plasmas, Atmospheric modeling, Time-domain analysis, Lightning, Numerical models, Time-varying systems, Computational modeling, Arc discharge, Electromagnetics (EMs), Lightning, Multiphysics modelling, Plasma, Thermal model, Thermally dependent electrical
• Public URL: https://nottingham-repository.worktribe.com/output/850353
• Publisher URL: http://ieeexplore.ieee.org/document/7879155/
• Additional Information: c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.