Theory of short waves in gas dynamics

Autor: G. P. Soldatov
Rok vydání: 1975
Předmět:
Zdroj: Journal of Applied Mechanics and Technical Physics. 14:340-343
ISSN: 1573-8620
0021-8944
DOI: 10.1007/bf00850946
Popis: An examination is made of the two-dimensional, almost stationary flow of an ideal gas with small but clear variations in its parameters. Such gas motion is described by a system of two quasilinear equations of mixed type for the radial and tangential velocity components [1, 2]. Partial solutions [3, 4], characterizing the variation in the gas parameters in the vicinity of the shock wave front (in the short-wave region), are known for this system of equations. The motion of the initial discontinuity of the short waves derived from the velocity components with respect to polar angle and their damping are studied in the report. A solution of the equations characterizing the arrangement of the initial discontinuity derived from the velocities is presented for one particular case of the class of exact solutions of the two parameter type [4]. Functions are obtained which express the nature of the variation in velocity of the front of the damped wave and its curvature.
Databáze: OpenAIRE
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