Interaction of Spherical Source Flow and Axisymmetric Free Jet with a Rarefied Background

摘要

The interaction of a hypersonic source flow and an axisymmetric free jet with a rarefied background is investigated. Based on the singular nature of the distribution function, the Boltzmann equation is split into two kinetic equations. This approach includes the basis for the 'beam-continuum' method as a special case. Application of the simple moment method leads to a closed form solution for the results arrived at by Muntz, Hamel and Maguire for source flow. The solution for the axisymmetric free jet also agrees with the experimental results due to Brook, Hamel and Muntz. (Author)