Effects of curvature and compressibility on the stability of thermal fronts

Journal Article · Thu Jun 15 00:00:00 EDT 2006 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2212389· OSTI ID:20787409

Ibanez S, Miguel H; Bessega L, Maria C; Shchekinov, Yuri ^[1]

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1. Centro de Fisica Fundamental, Facultad de Ciencias, Universidad de los Andes, Apartado 26, Ipostel, La Hechicera, Merida (Venezuela)

The stability of subsonic thermal fronts against corrugation is analyzed and an exact dispersion relation is obtained taking into account the effects of the curvature of the distorted front as well as the compressibility of the gas. At a certain value of the Mach number ahead of the thermal front, unstable rates show a maximum; these rates drop to zero when a Chapman-Jouguet regime is established behind heat fronts. It is shown that curvature effects tend to stabilize conductive heat fronts propagating in a compressible gas.

• OSTI ID: 20787409
• Journal Information: Physics of Plasmas, Vol. 13, Issue 6; Other Information: DOI: 10.1063/1.2212389; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPRESSIBILITY
DISPERSION RELATIONS
HEAT
MACH NUMBER
PLASMA
PLASMA INSTABILITY
RADIATION TRANSPORT
STABILITY
SUBSONIC FLOW
THERMAL CONDUCTION
THERMODYNAMICS