An important problem for space vehicles is contamination of the spacecraft surface by combustion products and unburned fuel exhausting from control thruster nozzles. The objective of the present work is a detailed simulation of the backflow in the case of gas exhaustion from the nozzle into vacuum. A specific feature of this problem is the drastic expansion of the initially dense flow at the nozzle exit, which makes necessary simulations of the near-continuum flow inside the nozzle, the transitional flow near the nozzle exit, and the free-molecular flow outside the nozzle. The simulations are performed by a combined Navier-Stokes/DSMC approach.


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    Title :

    DSMC and Navier-Stokes Study of Backflow for Nozzle Plumes Expanding into Vacuum


    Contributors:

    Publication date :

    2005


    Size :

    7 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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