Abstract
The complex three-dimensional ow eld arising from the interaction of a shock-induced turbulent vortical structure with a sidewall boundary layer is examined by numerically solving the Reynolds-averaged compressible Navier–Stokes equations closed with a two-equation k–2 turbulence model. The con guration considered is representative of a scramjet inlet compression system and comprises two opposed sharp ns mounted on a at plate at 7 and 15 deg to the incoming ow. The ow eld arising from the impingement of a primary vortical structure on the 7 deg n is found to be strongly dependent on the state of the boundary layer on this sidewall. An elegant turbulent kinetic energy production-limiting technique is employed to reproduce the complicated saddle-spiral topology observed in the experimental sidewall oil ow pattern. Detailed analysis of the computed ow eld shows that the main consequence of the interaction is characterized by the ejection of the vortex formed at the n–plate junction (corner vortex in the terminology of single- n ows) in a direction along the sidewall and normal to the plate. The ow eld asymptotes to the classic two-dimensional shock–turbulent boundary-layerinteraction at large distances from the plate.
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