A high-frequency combination probe was used to measure dynamic flow quality in the test section of the NASA Langley 0.3-m Transonic Cryogenic Tunnel. The probe measures fluctuating stagnation (total) temperature and pressure, static pressure, and flow angles in two orthogonal planes. Simultaneous measurements of unsteady total temperature and pressure were also made in the settling chamber of the tunnel. The data show that the stagnation temperature fluctuations remain constant, and the stagnation pressure fluctuations increase by a factor of two, as the flow accelerates from the settling chamber to the test section. In the test section, the maximum rms value of the normalized fluctuating velocity is 0.7 percent. Correlation coefficients failed to show vorticity, entropy, or sound as the dominant mode of turbulence in the tunnel.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Turbulence measurements and noise generation in a transonic cryogenic wind tunnel


    Contributors:

    Published in:

    Publication date :

    1990-05-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    Turbulence measurements and noise generation in a transonic cryogenic wind tunnel

    NG, W. F. / GUNDAPPA, M. / GRIFFITH, D. O. et al. | AIAA | 1990


    Cryogenic nitrogen as a transonic wind-tunnel test gas

    ADCOCK, J. / KILGORE, R. / RAY, E. | AIAA | 1975


    Optimum transonic wind tunnel

    BARNWELL, R. / EDWARDS, C. / KILGORE, R. et al. | AIAA | 1986


    Femtosecond Laser Electronic Excitation Tagging Velocimetry in a Transonic, Cryogenic Wind Tunnel

    Burns, Ross A. / Danehy, Paul M. / Halls, Benjamin R. et al. | AIAA | 2016