Peculiarities of flow over a blunted body by a supersonic polydispersed jet with a swirl of reflected particles

Abstract

The acceleration of monodispersed and polydispersed axisymmetric nozzle flows and their interaction with a sphere are investigated. The formulas given in [1] are applied to the recovery coefficients of velocity components of reflected particles. For the development of a physicomathematical model, semiempirical information on the influence of particle rotation on coefficients of its interaction with a carrier continuous medium, the Magnus force, and the damping torque are taken into account. Numerical investigations are carried out for a characteristic mass spectrum of particles as a set of several fractions [2]. It is demonstrated that the rotation of monodispersed particles leads to the caustic (envelope of paths of reflected particles) moving away from the body in the flow. The algorithm elaborated enables specific details of the mass spectrum of the particles bombarding the body with known thermomechanical properties and coefficients of their interaction with the body surface to be estimated by comparing experimental and numerical results.