DISCRETE SIMULATION OF GAS FLOWS UNDER REDUCED PRESSURE

Abstract

A model using the standard rules of behavior of the particles of the lattice gas at their motion, and special rules for collisions in the lattice nodes was studied. The rules mentioned above are typical for HPP-gas. Beside the main components that describe the process within the simulated field, the nodes of wall were introduced in consideration. Also, to simulate the gas flow in the model   the sources of particles located at the border area were introduced. The results of numerical experiments on the behavior of the lattice HPP-gas at his movement between the parallel walls are presented. We considered the cases of absence or presence of obstacles in the flow. To assess the adequacy of the proposed model the transition possibility from the virtual model variables to the actual physical quantities was considered. The results of numerical experiments show that the model experiments carried out correspond to flow of real gases in laminar mode. In addition, the gas pressure at the experiments corresponded to medium vacuum mode. The obtained model data are quite match with the generally accepted views on the behavior of gases. Taking into account that given model is extremely simple and effective at the computer implementation, we can recommend it to describe a real gas flows in a medium vacuum. The possibility of application of 1-D model of lattice gas with orthogonal space lattice was studied for gas flow analysis. It was shown that proposed model can be recommended for computer simulation of real gas flow at lower pressure.  

For citation:

Bobkov S.P., Sokolov V.L. Discrete simulation of gas flows under reduced pressure. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 2. P. 79-84.