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Stability of the boundary layer and the spot
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wygnanski, I. |
| Copyright Year | 2007 |
| Description | The similarity among turbulent spots observed in various transition experiments, and the rate in which they contaminate the surrounding laminar boundary layer is only cursory. The shape of the spot depends on the Reynolds number of the surrounding boundary layer and on the pressure gradient to which it and the surrounding laminar flow are exposed. The propagation speeds of the spot boundaries depend, in addition, on the location from which the spot originated and do not simply scale with the local free stream velocity. The understanding of the manner in which the turbulent manner in which the turbulent spot destabilizes the surrounding, vortical fluid is a key to the understanding of the transition process. We therefore turned to detailed observations near the spot boundaries in general and near the spanwise tip of the spot in particular. |
| File Size | 1199433 |
| Page Count | 28 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070038972 |
| Archival Resource Key | ark:/13960/t6wx2c657 |
| Language | English |
| Publisher Date | 2007-03-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Turbulence Analogies Stability Laminar Boundary Layer Laminar Flow Reynolds Number Shapes Free Flow Boundary Layers Pressure Gradients Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
