Calculation of two-phase flow in an axisymmetric laval nozzle with allowance for particle reflection from the walls

A method and the results of calculating the parameters of two-phase monodisperse and polydisperse flows in a Laval nozzle are presented. A general particle-wall interaction model based on the results of experimental research is used. It is shown that taking the real characteristics of the interaction between the condensate and the walls into account makes it possible to determine a number of important flow parameters with much greater accuracy.deceasedTranslated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 2, pp. 79–85, March–April, 1990.     

Motion of a polydisperse material in a. vertical gas flow

The method of solution previously presented [1] for a two-phase flow is based on replacing the actual interaction between groups of particles by some continuously acting force. Here a more rigorous method of solution is presented via an analysis of the laws of collision between numerous particle groups. Only steady-state flows under isothermal conditions are considered, to simplify the problem.     

Monte-Carlo simulation of light scattering in fractal porous media

Monte-Carlo simulation of light propagation in a porous medium with a mass fractal morphology was carried out. It was shown that the simulation results can be used to analyze experimental data on light scattering and to study the porous medium structure. __________ Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 75, No. 2, pp. 193–196, March–April, 2008.