Discrete and Continuous Models and Applied Computational ScienceDiscrete and Continuous Models and Applied Computational Science2658-46702658-7149Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)8241Research ArticleSimulation of Gas Mixture Flows in MicrochannelsKudryashovaT Akudryashova@imamod.ruPodrygaV Opvictoria@list.ruPolyakovS V-Keldysh Institute of Applied Mathematics RAS15032014315416308092016Copyright © 2014,2014Problems of simulation of flows of the rarefied gas mixes in micro-channels of technical systems are considered. For decision of such problems a new approach is offered. This approach combines calculations on the quasi-gasdynamics (QGD) equations and molecular dynamic (MD) calculations. The QGD equations are used for calculation of main parameters of mix at macro-level. MD-calculations are used for correction of macro-parameters in the Knudsen layer. For approbation of a technique calculations of the expiration of binary nitrogen-hydrogen mix are carried out to the rarefied microspace. The stationary characteristics of a current received in calculations were compared to the parameters calculated within molecular and dynamic model, and also to results of natural experiments. Comparison showed that in case of the micron sizes of technical system QGD-modeling gives a qualitative consent with experiment and MD-model data. Receiving quantitative coincidence of results requires use of the realistic state equations of a mix component, for example, on a basis of the Virial decomposition coordinated with MD-model.mathematical modelingnumerical methodsparallel algorithmsgas mixturesfluid and molecular dynamics in micro-channelsматематическое моделированиечисленные методыпараллельные алгоритмыгазовые смесигазовая и молекулярная динамикамикроканалы