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Lagrange formalism for a system of several fluids interacting electromagnetically; Formalisme lagrangien pour un systeme de plusieurs fluides en interaction electromagnetique

Abstract

After giving the Lagrange expression for a conducting fluid in an external electromagnetic field, the author shows that a Lagrange expression exists for describing the evolution of a system of interacting fluids obtained by adding the Lagrange expression of each fluid.to that of the electromagnetic field. By variation are obtained the fluid movement equation coupled to the Maxwell equations. It is shown that the study of small movements around a stationary state can be deduced from the Lagrange equation expanded to the second power order of the perturbation. It is then possible to deduce the normal mode equations and the study the stability by examining the modes which are marginally stable. (author) [French] Apres avoir rappele l'expression, du Lagrangien pour un fluide conducteur dans un champ electromagnetique exterieur, on montre qu'il existe un Lagrangien pour decrire l'evolution d'un systeme de fluides en.interaction que l'on obtient par la superposition du Lagrangien de chaque fluide et du Lagrangien du champ electromagnetique. On obtient par variation, les equations du mouvement des fluides, couplees aux equations de Maxwell. On montre que l'etude des petits mouvements autour d'un etat stationnaire se deduit du Lagrangien developpe au second1 ordre en puissance de la perturbation. On peut  More>>
Authors:
Vuillemin, M [1] 
  1. Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1964
Product Type:
Technical Report
Report Number:
CEA-R-2608
Resource Relation:
Other Information: 3 refs
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTROMAGNETIC FIELDS; FLUID FLOW; LAGRANGIAN FIELD THEORY; LAGRANGIAN FUNCTION; MAXWELL EQUATIONS
OSTI ID:
20702677
Research Organizations:
CEA Fontenay-aux-Roses, 92 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR05R2608017802
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
17 pages
Announcement Date:
Apr 10, 2006

Citation Formats

Vuillemin, M. Lagrange formalism for a system of several fluids interacting electromagnetically; Formalisme lagrangien pour un systeme de plusieurs fluides en interaction electromagnetique. France: N. p., 1964. Web.
Vuillemin, M. Lagrange formalism for a system of several fluids interacting electromagnetically; Formalisme lagrangien pour un systeme de plusieurs fluides en interaction electromagnetique. France.
Vuillemin, M. 1964. "Lagrange formalism for a system of several fluids interacting electromagnetically; Formalisme lagrangien pour un systeme de plusieurs fluides en interaction electromagnetique." France.
@misc{etde_20702677,
title = {Lagrange formalism for a system of several fluids interacting electromagnetically; Formalisme lagrangien pour un systeme de plusieurs fluides en interaction electromagnetique}
author = {Vuillemin, M}
abstractNote = {After giving the Lagrange expression for a conducting fluid in an external electromagnetic field, the author shows that a Lagrange expression exists for describing the evolution of a system of interacting fluids obtained by adding the Lagrange expression of each fluid.to that of the electromagnetic field. By variation are obtained the fluid movement equation coupled to the Maxwell equations. It is shown that the study of small movements around a stationary state can be deduced from the Lagrange equation expanded to the second power order of the perturbation. It is then possible to deduce the normal mode equations and the study the stability by examining the modes which are marginally stable. (author) [French] Apres avoir rappele l'expression, du Lagrangien pour un fluide conducteur dans un champ electromagnetique exterieur, on montre qu'il existe un Lagrangien pour decrire l'evolution d'un systeme de fluides en.interaction que l'on obtient par la superposition du Lagrangien de chaque fluide et du Lagrangien du champ electromagnetique. On obtient par variation, les equations du mouvement des fluides, couplees aux equations de Maxwell. On montre que l'etude des petits mouvements autour d'un etat stationnaire se deduit du Lagrangien developpe au second1 ordre en puissance de la perturbation. On peut alors retrouver les equations des modes normaux et etudier la stabilite en recherchant les modes marginalement stables. (auteur)}
place = {France}
year = {1964}
month = {Jul}
}