Thermal evaporation of spherical clouds - Effects of viscous stresses

Details Thermal evaporation of spherical clouds - Effects of viscous stresses Thermal evaporation of spherical clouds - Effects of viscous stresses

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..690d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 15, 1984, p. 690-701. Research supported by the Alfred P. Sloan F

Physics

34

Evaporation, Interstellar Gas, Inviscid Flow, Shock Waves, Supernova Remnants, Viscous Flow, Boltzmann Transport Equation, Mach Number, Navier-Stokes Equation, Plasma Clouds, Solar Wind

Scientific paper

The thermal evaporation of a cold spherical cloud embedded in hot gas is analyzed, including the effects of viscous stresses as well as 'saturation' of the conductive heat flux, for the case of equal electron and ion temperatures. The relevant transport properties for an H-He plasma are discussed, including the modification of these transport coefficients when temperature or velocity gradients become large. The fluid-dynamical equations for steady spherical evaporation are given and cast into dimensinless form. Numerical integration of these equations and the results are discussed, emphasizing the novel features of the viscous solutions, astrophysical implications, and uncertainties in the physics.

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