Supersonic boundary-layer stability in a high-area-ratio nozzle
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Pauley, Laura L.↗
Engineering topics
Dagher, Samir N.
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A numerical investigation of supersonic nozzle boundary layer transition
The boundary layer stability within the high-area-ratio nozzle at NASA Lewis was tested at five chamber pressure conditions. For all nozzle conditions examined, Taylor-Goertler vortices grew more rapidly than Tollmien-Schlichting waves. The experimental heat flux was accurately predicted by a laminar boundary layer computation, thereby confirming the laminar nature of the nozzle boundary layer flow. When the chamber pressure was increased in a series of cases, the transition point occurred farther upstream. The number of vortices contained in the dominant instability increased with chamber pressure.
Pauley, Laura L.↗