Loading...
Please wait, while we are loading the content...
Similar Documents
Simple turbulence models and their application to boundary layer separation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wadcock, A. J. |
| Copyright Year | 1980 |
| Description | Measurements in the boundary layer and wake of a stalled airfoil are presented in two coordinate systems, one aligned with the airfoil chord, the other being conventional boundary layer coordinates. The NACA 4412 airfoil is studied at a single angle of attack corresponding to maximum lift, the Reynolds number based on chord being 1.5 x 10 to the 6th power. Turbulent boundary layer separation occurred at the 85 percent chord position. The two-dimensionality of the flow was documented and the momentum integral equation studied to illustrate the importance of turbulence contributions as separation is approached. The assumptions of simple eddy-viscosity and mixing-length turbulence models are checked directly against experiment. Curvature effects are found to be important as separation is approached. |
| File Size | 2983025 |
| Page Count | 72 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800015777 |
| Archival Resource Key | ark:/13960/t6741km3x |
| Language | English |
| Publisher Date | 1980-05-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Mixing Length Flow Theory Turbulent Boundary Layer Airfoils Two Dimensional Flow Flow Geometry Eddy Viscosity Boundary Layer Separation Reynolds Stress Turbulence Models Wakes Flow Visualization Mathematical Models Separated Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
