The emission of a gas jet from a conical nozzle

✍ Scribed by L.M. Zigangareyeva; O.M. Kiselev

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 672 KB
• Volume: 64
• Category: Article
• ISSN: 0021-8928
• DOI: 10.1016/s0021-8928(00)00030-7

✦ Synopsis

The axially symmetric,, ,~ubsonic emission of a jet of compressible fluid from a conical nozzle is considered. Subject to the assumptions that a solution of the corresponding boundary-value problem exists and that a certain asymptotic expansion holds in the case of this solution, it is proved that, in an axially symmetric jet of a compressible fluid at a critical pressure on the free surface, the gas velocity reaches the sound velocity in a certain plane which is perpendicular to the axis and located at a finite distance from the nozzle, edge. Results are presented for a jet of a perfect gas with an adiabatic exponent 7 = 1.4. Approximate formulae are given which enable one to determine the form of a jet with a sonic velocity on the free surface.