Home – Home – Jornals – Thermophysics and Aeromechanics 2002 number 2

The method of direct simulation of Monte Carlo (DSMC) was applied for a study of axisymmetric outflow of monoatomic gas into vacuum from a short-pulse source for the range of Knudsen numbers which provides a flow pattern with transitional and free-molecular modes. This problem statement is the approximate model for laser ablation of a solid target into vacuum after impact of a short laser pulse of moderate intensity. The stages of outflow and dispersion were considered for corresponding states of the source turn-on and turn-off. The main emphasis was put on the study of flow structure, spatial and temporal evolution of gas dynamic parameters and laws of translational relaxation.