It is proved that in heat-conducting non-viscous gas
flows there are characteristic surfaces of three types: 1) two
sound characteristics, which distribution velocity is
c/sqrt{?}, where c is a sound velocity in a
non-heat-conducting gas, ? is an isentropic exponent; 2)
contact characteristic; 3) thermal compression wave, spreading in
a given cold gas flow. It is shown that in heat-conducting
non-viscous gas flows it may appear gradient disaster effect.
There are proved theorems of existence and uniqueness in class of
analytic functions of problems solutions about piston and about
obtaining prescribed distributions. By means of special infinitely
convergent series it is described one heat-conducting non-viscous
gas flow, analogous to centred Riemenn wave and transmitting
strong compression of one-dimensional gas layers, taking into
account balanced emission and Compton mechanism of photons
dispersion. There is the algorithm of a calculation for flows,
using a presence of sound characteristics.
Note. Abstracts are published in author's edition
© 1996-2001, Institute of computational Techologies SB RAS, Novosibirsk
© 1996-2001, Siberian Branch of Russian Academy of Science, Novosibirsk
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