Abstract The paper studies non-stationary gas flow in a transitional regime in a region with a moving boundary. Interest in this problem is due to the search for new principles of gas separation, which can be implemented in practice as a microelectromechanical system (MEMS). The diminutiveness of such systems makes them relevant for aerospace applications. To solve the problem, the method of event-driven molecular dynamics (EDMD) was used, which was extended by the authors to the case of computational domain with moving boundaries (simulating moving elements of the device). A new principle of operation of the separation device was proposed and investigated. It was obtained that the separation coefficient of proposed device can be significantly higher than that of the diffusion method.

    Highlights EDMD was extended to the case of moving boundaries. Unsteady transitional flow in a region with moving boundary was studied. A new principle of operation of the separation device was proposed. Separation coefficient of proposed device is significantly higher than that of the diffusion method.


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    Title :

    A new principle of separation of gas mixtures in non-stationary transitional flows


    Contributors:

    Published in:

    Acta Astronautica ; 163 ; 120-125


    Publication date :

    2019-05-04


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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