The effects of an exhaust plume and nozzle length on the flow organization of axisymmetric base flows have been studied experimentally at Mach numbers of 0.76 and 2.2 using particle image velocimetry. From the measured velocity data, the mean pressure field was computed. The application of different nozzle lengths resulted in flow cases in which the shear layer impinges on the model, on the flow downstream of the model, or intermittently on the model and on the flow. The results showed that, for intermediate nozzle lengths, the overall pressure level downstream of the base decreased in the transonic flow cases and increased in the supersonic flow cases, indicating an entrainment effect in transonic flow and a displacement effect in supersonic flow. An increase in nozzle length was found to lead to a higher local pressure at the nozzle exit, which seemed to result in more overexpanded plumes in the transonic flow cases and less underexpanded plumes in the supersonic flow cases.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effects of Exhaust Plume and Nozzle Length on Compressible Base Flows



    Published in:

    AIAA Journal ; 57 , 3 ; 1184-1199


    Publication date :

    2018-12-11


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Exhaust Nozzle Plume Effects on Sonic Boom

    Castner, R | Online Contents | 2012


    Exhaust Nozzle Plume and Shock Wave Interaction

    Castner, Raymond / Elmiligui, Alaa / Cliff, Susan | AIAA | 2013


    Exhaust Nozzle Plume and Shock Wave Interaction

    Castner, R. / Elmiligui, A. / Cliff, S. et al. | British Library Conference Proceedings | 2013



    Effect of nozzle geometry on the resistojet exhaust plume

    BREYLEY, LORANELL / SERAFINI, JOHN / HOFFMAN, DAVID et al. | AIAA | 1987