| Abstract: | Free supersonic underexpanded jets are studied using a direct method conservative splitting scheme for solving the Boltzmann
equation. Numerical solutions for a jet flowing into a vacuum and into a fluid-filled space are presented for the following
ranges of the parameters: Knudsen number 10−6<Kn<∞ and pressure ratio 10<n<∞. The solutions are compared with experimental data. Instabilities associated with free turbulence effects in the mixing
layer are detected for low Kn numbers.
Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 2, pp. 153–157, March–April, 1998.
The work was carried out with support from the Russian Foundation for Fundamental Research (project No. 96-01-00829). |
