Numerical Construction of the Ideal Gas Molecules Density Distribution in Modeling Interaction with the Spherical Surface

摘要

In this paper the numerical construction of the ideal gas molecules distribution density in the modelling of their interaction with the spherical body by molecular dynamics method and its comparison with already known Theoretical data, produced for the gas interaction with a flat wall. The gas condition took as equilibrium, molecules consider as elastic spheres, distribution of which by velocities describes by well-known Maxwell distribution. Molecules distribution in the space around sphere takes as evenly - their coordinates subordinate the even distribution, coordinates of the velocity vectors taking randomly in respectively with the normal distribution. For constructing the target function of the distribution density by the velocity values, only these molecules are considering, for which the movement time to the spherical body surface not greater than the given number. Function construction is producing as histogram by the velocity intervals. The results of the calculation mare shown that target function of the distribution density by molecules velocities, which are hitting the spherical body surface for some time period, is practically matched with the theoretical function for the flat wall case.