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Article
Study of effect of a smooth hump on hypersonic boundary layer instability
Effect of a two-dimensional smooth hump on linear instability of hypersonic boundary layer is studied by using parabolized stability equations. Linear evolution of mode S over a hump is analyzed for Mach 4.5 a...
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Article
Streamwise streaks and secondary instability in a two-dimensional bent channel
Streamwise streaks generated from a pair of oblique waves and secondary instability of the streaks are studied in a two-dimensional bent channel. Nonlinear parabolized stability equations (NPSE) are employed t...
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Article
Study of tonal noise behavior of an airfoil by using parabolized stability equations
Tonal noise or whistle noise is an aerodynamic noise known to be generated due to boundary layer instability. The relation between the instability of Tollmien–Schlichting wave and the tonal noise was dealt wit...