Calculation of the acceleration of a cylindrical body by an unsteady two-phase flow

Calculations are performed for the acceleration of a cylindrical body by the unsteady flow of a two-velocity two-temperature gas-disperse medium taking into account the following two mechanisms of interparticle interaction: collisions of randomly moving dispersed particles in a rarefied state or deformation of a porous skeleton in closepacked particles. It is established that there are regimes of acceleration of the body in which its velocity exceeds the maximum velocity of the particles at the duct exit. The possibility of using simplified calculation schemes in modeling the acceleration of the body is shown. Calculation and experimental results are compared. Translated fromFizika Goreniya i Vzryva, Vol. 35, No. 5, pp. 138–145, September–October 1999.