Abstract
Boundary layer stability analysis performed through application of the parabolized stability equations (PSE) has been shown to provide accurate calculations of second-mode two-dimensional wave disturbances.1 For supersonic flows, between approximately Mach one and five, two-dimensional wave disturbances are usually not the most unstable distur bance inside a boundary layer, and the oblique wave disturbance, which is an extension of the Tollmien-Schlichting instability in incompressible flows, commonly becomes the most amplified disturbance. This paper demonstrates the use of the STABL software suite to calculate accurate first or second-mode oblique wave disturbances. Calculated oblique wave amplification rates and wave angles show very good agreement to previously-published data of supersonic flow over flat plates and cylinders. This analysis is then extended to a blunt wedge at angles of attack to show the impact on the stability results when testing for oblique and two-dimensional disturbances.
| Original language | English (US) |
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| Title of host publication | 38th AIAA Fluid Dynamics Conference and Exhibit |
| State | Published - Dec 1 2008 |
| Event | 38th AIAA Fluid Dynamics Conference and Exhibit - Seattle, WA, United States Duration: Jun 23 2008 → Jun 26 2008 |
Other
| Other | 38th AIAA Fluid Dynamics Conference and Exhibit |
|---|---|
| Country/Territory | United States |
| City | Seattle, WA |
| Period | 6/23/08 → 6/26/08 |