• flows of rarefied gaseous mixtures in networks of long channels

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 987
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a method is presented to calculate the steady flows of rarefied gaseous mixtures in networks of long channels. the approach is based on the kinetic level. first, the mccormack linearized kinetic model is solved to obtain the local flow properties in the channels in a wide range of gaseous rarefaction and mole fraction. second, the global flow properties including the flow rates and the distribution of the pressure and the mole fraction are deduced. an integral equation is introduced in order to determine the flow rates as functions of the differences of the partial pressures between the two ends of each channel. the conservation of mass at the nodes of the network results into a system of linear algebraic equations. the overall mathematical problem is solved iteratively. pressure driven flows of he/xe and he/ar through an example network of circular tubes are calculated at intermediate values of the gaseous rarefaction. the results of the flow rates and the pressures and the mole fractions at the nodes in the whole system and the representative distributions of the pressure and the mole fraction along the channels are presented and commented on.

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