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Titolo:
Explicit electromagnetic algorithm for 2D using a multi-fluid model in laser-produced plasmas
Autore:
Garcia, S; Fuentes, F; Paz, C;
Indirizzi:
Univ Vigo, Area Mecan Fluidos, Dept Ingn Mecan Maq & Motores Term & Fluidos, ETSEIM, Vigo, Spain Univ Vigo Vigo Spain Maq & Motores Term & Fluidos, ETSEIM, Vigo, Spain
Titolo Testata:
COMPUTER PHYSICS COMMUNICATIONS
fascicolo: 2-3, volume: 127, anno: 2000,
pagine: 271 - 285
SICI:
0010-4655(200005)127:2-3<271:EEAF2U>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-FIELDS;
Keywords:
electromagnetic fields; ICF; plasma; method; codes; MHD-fluid; multi-fluid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Garcia, S Univ Vigo, Area Mecan Fluidos, Dept Ingn Mecan Maq & Motores Term & Fluidos, ETSEIM, Lagoas Marcosende 9, Vigo, Spain Univ Vigo Lagoas Marcosende 9 Vigo Spain osende 9, Vigo, Spain
Citazione:
S. Garcia et al., "Explicit electromagnetic algorithm for 2D using a multi-fluid model in laser-produced plasmas", COMP PHYS C, 127(2-3), 2000, pp. 271-285

Abstract

A new algorithm is presented for the explicit calculation of the electromagnetic fields in 2D simulation plasmas. This paper describes a multi-fluid model for the simulation of laser plasma interaction. Our description includes a simple two-electron fluid model and the background ions in a laser target, as coupled fluid components moving relative to a fixed Eulerian mesh. The electrons become a perfect gas obeying the non relativistic Maxwell-Boltzmann distribution. Braginskii's expression is used. The magnetic field equation is integrated in time by the Lax-Wendroff modified scheme, a method that is known to be stable as long as the Courant-Friedrichs-Lewy condition is satisfied. The first approximation stepBm+1/2 = [B-m] + ([upsilon(m)] X B-m)Delta t/2is followed by the full stepBm+1 = B-m + (upsilon(m+1/2) X Bm+1/2)Delta t. With the explicit treatment of V X B in the fluid equation used, the matrix equation solved for the magnetic field reduces, from a 7-point coupling to a 5-point one to its nearest neighbors, in the direction z (B-z), which leads to a 5-diagonal, sparse matrix that can be solved by both ADI an TDMA. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 25/11/20 alle ore 04:23:03