The distinguishing features of the two-dimensionl particle simulation program developed for research on laser-plasma interaction are described.

The excitation of plasma waves, the acceleratioin of electrons and the generation of suprathermal electrons in the processes of laser plasma resonant absorption have been simulated using the developed two dimensional multi time scale fully electromagnetic relativistic particle simulation computer code. The simulation results prove to be reasonable through theoretical analyses.

The basic concepts and equations of Smoothed Particle Hydrodynamics(SPH) are reformulated.The strategy and practice of programming a 3-dimensional SPH code and also the check of the code are outlined.The influences of artificial viscocity together with artificial heat flow are investigated numerically.As an example of the application,the results of numerical simulation of a 3-dimensional hypervelocity impact problem are given with some existing problems of SPH method.