An experimental and analytical investigation of a strut-mounted, four-nozzle, downstream-facing, gaseous fuel-injector assembly was conducted in a Mach 4 airstream at 154 psia and 520 R. Helium was used as the injectant in order to simulate a low molecular weight fuel, and the interjet spacing (S/D) was the main parameter varied. The principal data are in the form of helium concentration profiles at seven axial stations, Mach number distributions at three axial stations, and Schlieren photographs of the flow field at different interjet spacings. An approximate analysis was developed based upon a linearization in the Von Mises plane, Crocco integrals for the temperature and concentrations fields, and an eddy viscosity model. Good agreement with the data was achieved. It was found that, at these conditions, interjet spacing has a significant effect on mixing only up to S/D of approximately 2.5, with the concentration of the injectant at a given point becoming smaller as S/D is increased.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Turbulent mixing of multiple co-axial gaseous fuel jets in a supersonic airstream


    Contributors:

    Conference:

    American Institute of Aeronautics and Astronautics and Society of Automotive Engineers, Propulsion Conference ; 1974 ; San Diego, CA


    Publication date :

    1974-10-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English







    Turbulent Mixing Noise From Supersonic Jets

    Tam, C. K. W. / Chen, P. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1993


    Turbulent mixing noise from supersonic jets

    Tam, Christopher / Chen, Ping | AIAA | 1993