A dynamic p-adaptation algorithm for the DGTD simulation of nonlinear EM-plasma interaction

Su Yan, Jianming Jin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

During the process of high-power microwave breakdown, neutral air particles are rapidly ionized by high-intensity electromagnetic (EM) fields. The ionized particles form a cloud of plasma, which generate secondary EM fields and interact with the incident fields. In the meantime, the plasma also diffuses from higher density regions to the surrounding lower density regions. The ionization-diffusion mechanism in the nonlinear EM-plasma interaction results in a plasma front with an extremely high density gradient, which evolves and propagates in space and time. To capture such a high density gradient and the resulting highly localized EM fields, a numerical method with a very high spatial resolution is required. Based on the nodal discontinuous Galerkin time-domain method, a dynamic p-adaptation algorithm is proposed in this paper to capture the fast varying physics by changing the order of basis functions wherever and whenever needed. The phenomenon of a microwave streamer elongating under the excitation of a high-intensity standing wave is simulated to demonstrate the capability of the proposed method.

Original languageEnglish (US)
Title of host publication2016 IEEE/ACES International Conference on Wireless Information Technology, ICWITS 2016 and System and Applied Computational Electromagnetics, ACES 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509012596
DOIs
StatePublished - May 4 2016
EventIEEE/ACES International Conference on Wireless Information Technology, ICWITS 2016 and System and Applied Computational Electromagnetics, ACES 2016 - Honolulu, United States
Duration: Mar 13 2016Mar 17 2016

Other

OtherIEEE/ACES International Conference on Wireless Information Technology, ICWITS 2016 and System and Applied Computational Electromagnetics, ACES 2016
CountryUnited States
CityHonolulu
Period3/13/163/17/16

ASJC Scopus subject areas

  • Computational Mathematics
  • Signal Processing
  • Instrumentation
  • Computer Networks and Communications

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  • Cite this

    Yan, S., & Jin, J. (2016). A dynamic p-adaptation algorithm for the DGTD simulation of nonlinear EM-plasma interaction. In 2016 IEEE/ACES International Conference on Wireless Information Technology, ICWITS 2016 and System and Applied Computational Electromagnetics, ACES 2016 - Proceedings [7465407] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ROPACES.2016.7465407