Loading...
Please wait, while we are loading the content...
Similar Documents
On the receptivity problem for 0(1) wavelength goertler vortices
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bassom, Andrew P. Hall, Philip |
| Copyright Year | 1993 |
| Description | In this paper, we make an investigation of the receptivity of boundary layer flows to Gortler vortex modes. A study by Denier, Hall, and Seddougui (1991) of the generation of vortices by wall roughness elements concluded that such elements are extremely poor as mechanisms to stimulate short wavelength modes, but that analysis was in error. We re-examine this problem and demonstrate how the form of the wall roughness is crucial in determining the vortex stability characteristics downstream of the roughness. In particular, we investigate the cases of both isolated and distributed forcing functions and show that, in general, a distributed function is much more important in generating vortices than are either isolated roughness or freestream disturbances. |
| File Size | 1047402 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940010532 |
| Archival Resource Key | ark:/13960/t3jx3922m |
| Language | English |
| Publisher Date | 1993-08-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Flow Stability Vortices Wall Flow Surface Roughness Free Flow Goertler Instability Boundary Layer Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
