Simulation of liquid-steam critical flow from a pipe filled with granular layer

Abstract

Abstract Based on the method of smoothed particles hydrodynamics a computational model of the critical flow of a vapor-liquid mixture from a pipe with a granular backfill has been developed. The dependence of critical mass flow rate from linear dimensions of the work area, the diameter of the grain filling and pipe length was determined. Numerical results were compared with available experimental data and numerical calculation demonstrates consistency with experimental data. Numerical data on the intensity of vaporization by the cross section of a pipe filled with granular backfill at initial values of the mass fraction of steam from 0.05 to 0.2 were obtained. The non-linearity of the vaporization rate during the mixture moving along the pipe with a decrease in intensity when moving along the length of the pipe is shown.