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A time domain numerical model of a warm plasma
Author(s) -
Young Jeffrey L.,
Brueckner Frank P.
Publication year - 1994
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/93rs03443
Subject(s) - discretization , curl (programming language) , plasma , physics , maxwell's equations , magnetic field , euler's formula , euler equations , divergence (linguistics) , time domain , mathematical analysis , backward euler method , electromagnetic field , classical mechanics , mathematics , computer science , quantum mechanics , computer vision , linguistics , philosophy , programming language
A new numerical model is proposed herein that predicts the space‐time profile of an electromagnetic wave in an anisotropic warm plasma. The model is based upon a second‐order spatial and temporal discretization of the coupled equations of Maxwell and Euler. In order to comply with the basic nature of the curl, divergence, and gradient operators, an uncollocated nodal scheme is used to approximate the electric field, magnetic field, velocity, and pressure throughout the computational domain. The theory is postulated in a three‐dimensional domain but is verified in two dimensions. A magnetic line source is used to excite the medium, and the numerical data are tested against closed‐form solutions. As demonstrated herein, the agreement is shown to be excellent.