Abstract
Extensive numerical computations have been carried out to understand the effects of a wall-mounted protuberance on the fluctuating pressure field on the surrounding surfaces. The Mach 1.6 supersonic turbulent boundary layer is modeled using a hybrid RANS-LES approach known as detached eddy simulation (DES). The effects of protuberance height to boundary layer thickness as well as surface curvature are investigated. Comparisons of the surface pressure coefficients to existing experimental data showed good agreement. In addition, it was found that increasing the protuberance height resulted in higher sound pressure levels on the surface. Surface curvature led to the spreading of the high pressure region in the spanwise direction upstream of the protuberance. Convection velocities of the turbulent structures increased downstream of the protuberance and were in good agreement with published literature.
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Frendi, A., Hahn, P. (2014). Pressure Fluctuations in the Vicinity of a Wall-Mounted Protuberance. In: Zhou, Y., Liu, Y., Huang, L., Hodges, D. (eds) Fluid-Structure-Sound Interactions and Control. Lecture Notes in Mechanical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-40371-2_6
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DOI: https://doi.org/10.1007/978-3-642-40371-2_6
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