3-D FDTD Modeling of Electromagnetic Wave Propagation in Magnetized Plasma Requiring Singular Updates to the Current Density Equation

Santosh Pokhrel, Varun Shankar, Jamesina J. Simpson

Research output: Contribution to journalArticle

Abstract

A new finite-difference time-domain (FDTD) algorithm for electromagnetic wave propagation in magnetized plasma is proposed. This algorithm permits the use of two time step increments: one for Maxwell’s equations,Δtc, and a second for the current density equation derived from the Lorentz equation of motion,Δtc. A major advantage of this algorithm over previous approaches is that only a single update iteration is needed for the current density equation even whenΔtc<Δt. This provides significant time savings that can make previously infeasibly-long simulations now practical. The algorithm’s implementation is also relatively simple, and it has relatively low memory requirements. The algorithm is validated against analytical results. A stability analysis is performed.

LanguageEnglish (US)
JournalIEEE Transactions on Antennas and Propagation
DOIs
StateAccepted/In press - Jun 13 2018

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Electromagnetic wave propagation in plasma
Current density
Maxwell equations
Equations of motion
Data storage equipment

Keywords

  • Earth
  • Earth-Ionosphere Waveguide
  • Electromagnetic wave propagation
  • FDTD
  • ionosphere
  • plasma

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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title = "3-D FDTD Modeling of Electromagnetic Wave Propagation in Magnetized Plasma Requiring Singular Updates to the Current Density Equation",
abstract = "A new finite-difference time-domain (FDTD) algorithm for electromagnetic wave propagation in magnetized plasma is proposed. This algorithm permits the use of two time step increments: one for Maxwell’s equations,Δtc, and a second for the current density equation derived from the Lorentz equation of motion,Δtc. A major advantage of this algorithm over previous approaches is that only a single update iteration is needed for the current density equation even whenΔtc<Δt. This provides significant time savings that can make previously infeasibly-long simulations now practical. The algorithm’s implementation is also relatively simple, and it has relatively low memory requirements. The algorithm is validated against analytical results. A stability analysis is performed.",
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