Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Model of a source-driven plasma interacting with a wall in an oblique magnetic eld.
Year:2009
Research Areas
  • Naval engineering
Information
Abstract
A fluid model of a magnetized source-driven plasma is discussed for regimes with Debye lengthion Larmor radiusplasma size and collisional mean-free path. Plasma collection by the wall is determined in terms of angle of incidence, magnetic strength, and plasma collisionality. For nonparallel incidence, a three-scale asymptotic analysis reveals a three-region matched structure consisting of a magnetically aligned bulk region, the Chodura layer, and the Debye sheath. Sonic Chodura and Bohm conditions define the singular region transitions. For near-parallel incidence, a separate analysis demonstrates the presence of a diffusive-collisional bulk region followed by a thin collisionless layer, which differs partially from the Chodura layer. A parametric analysis unveils the presence of four regimes depending on plasma collisionality: 1 a collisionless regime, with the magnetically channeled bulk region governed by plasma production; 2 a resistive semicollisional regime, where collisions retard the plasma transport in the bulk region; 3 a diffusive semicollisional regime, where the EB drift dominates the ion flux in the bulk region; and 4 a collisional regime, where collisions cancel out magnetic effects. At grazing incidence, plasma collection is found to vary nonmonotonically with plasma collisionality. Nonzero Debye-length effects are discussed briefly.
International
Si
JCR
Si
Title
PHYSICS OF PLASMAS
ISBN
1070-664X
Impact factor JCR
2,427
Impact info
Volume
16
Journal number
0
From page
043506
To page
043506
Month
ABRIL
Ranking
Participants
  • Autor: Eduardo Ahedo Galilea (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Análisis y experimentación en mecánica de fluidos y combustión
  • Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)