Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978znata..33..393b&link_type=abstract
Zeitschrift für Naturforschung, Teil a, vol. 33a, Apr. 1978, p. 393-397.
Astronomy and Astrophysics
Astrophysics
Astrophysics, Gas Ionization, Hydrogen Clouds, Ionizing Radiation, Stellar Radiation, Wave Fronts, Boundary Value Problems, Equations Of Motion, Flow Stability, Flow Velocity, Gas-Gas Interactions, Isothermal Processes, Shock Waves, Velocity Distribution
Scientific paper
A numerical solution is given to the problem of a weak R type ionization front approaching a contact discontinuity across which the density increases. During the interaction it is found that there are three possible configurations produced; the weak-R type ionization front becomes (1) weak-R type but slower for rho1/rho sub 0 less than 1.15, (2) strong-D type for rho1/rho sub 0 between 1.15 and 3.4 or (3) weak-D type for rho1/rho sub 0 greater than 3.4, where the original ionization front travels through a region of initial density rho0 and across the contact discontinuity the density becomes rho1. A fine spacial mesh length is chosen so that the structures of the resulting ionization fronts and shock waves may be identified clearly at any time.
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