Rayleigh-Taylor Instability of a Partially Ionized Porous Medium in the Presence of a Variable Horizontal Magnetic Field

概要

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The present paper is an investigation to study the Rayleigh-Taylor instability of apartially ionized porous medivam in the presence of a variable horizontal magneticfield. The criteria determining stability and instability are independent of the effectsof viscosity and collisional effects. The magnetic field stabilizes the system which isotherwise unstable in the abse?ace of the magnetic field. The viscosity of the mediumhas stabilizing effect on the growth rates. The permeability of the medium is found tohave no effect on the stability or instability of the system. It is found that the growthrate increases with the increase in permeability of the medium. An important conclusion that we have derived is that while the growth rate decreases with the increase inthe collisional frequency in the nonviscous case, the collisional frequency has noeffect on the growth rate in the viscous case.
社団法人日本物理学会の論文
1990-05-15