This research effort coordinated by the NATO Science and Technology Organization Applied Vehicle Technology 240 specialists’ group compiles and analyzes second-mode amplitudes on sharp slender cones. The analysis focuses on pressure fluctuations measured with piezoelectric sensors in 11 hypersonic wind tunnels operated by nine organizations located in three NATO countries (Belgium, Germany, and the United States) and Japan. The measurements are at freestream Mach numbers between 5 and 14, unit Reynolds numbers R e / m between 1.5 and 16 × 10 6 1 / m , and wall-to-total temperature ratios between 0.1 and 0.8. The study shows that second-mode growth rates can be predicted with parabolized stability equations (PSEs) over the wide range of conditions. The maximum second-mode amplitudes vary weakly at edge Mach number M e greater than 5.8 but significantly decrease at lower M e . The maximum N factor envelope from PSE and the measured amplitudes are used to estimate the initial amplitudes A 0 . At each Mach number, A 0 varies approximately as Reynolds number. This leads to transition N factors that increase with Reynolds number. This behavior is consistent with the results from Marineau (“Prediction Methodology for Second-Mode-Dominated Boundary-Layer Transition in Wind Tunnels,” AIAA Journal, Vol. 55, No. 2, 2017, pp. 484–499). This study indicates that amplitude-based methods for second-mode-dominated hypersonic boundary-layer transition predictions should be applicable across a wide range of conditions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Analysis of Second-Mode Amplitudes on Sharp Cones in Hypersonic Wind Tunnels



    Published in:

    Publication date :

    2019-03-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Compilation and Analysis of Second Mode Amplitudes on Sharp Cones in Hypersonic Wind Tunnels

    Marineau, Eric C. / Grossir, Guillaume / Wagner, Alexander et al. | AIAA | 2018


    Compilation and Analysis of Second Mode Amplitudes on Sharp Cones in Hypersonic Wind Tunnels (AIAA 2018-0349)

    Marineau, Eric C. / Grossir, Guillaume / Wagner, Alexander et al. | British Library Conference Proceedings | 2018


    Hypersonic rarefied flow over sharp slender cones

    Kussoy, Marvin I. / Stewart, David A. / Horstman, Clifford C. | TIBKAT | 1972


    Study of hypersonic flow past sharp cones

    TAYLOR, JEFF / HASSAN, H. / MOSS, JAMES | AIAA | 1989


    Hypersonic Wind Tunnels

    Chanetz, Bruno / Délery, Jean / Gilliéron, Patrick et al. | Springer Verlag | 2020