On the stability of the compressible boundary-layer flow over a rotating cone
نویسندگان
چکیده
We investigate the type I modes of instability within the compressible boundary-layer flow over a rotating cone, defined by general half angle ψ. The work extends previous studies into the compressible rotatingdisk flow (ψ = 90o) and incompressible rotating-cone flows. Generalised compressible von Kármán equations are established and solved numerically to give the laminar-flow profiles. We then conduct a high Reynolds number study into the stationary modes of instability by establishing a compressible Rayleigh equation which is solved numerically. The formulation enables a parameter study into the effects of Mach number, surface temperature and surface mass flux on both the laminar flows and their stability characteristics. Such a study is presented with a view to suggesting potential control mechanisms in aerodynamically-significant flows.
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