Unsteady adverse pressure gradient turbulent boundary layers
Abstract
Unsteady turbulent boundary layers with an adverse pressure gradient are calculated using a one-equation model allowing for the viscous and buffer regions and including some dynamics of the turbulence. In the analysis, a fully developed steady flat-plate turbulent boundary layer is assumed at the inlet of the unsteady region. The physical meaning of the model used here, the solution procedure, and the initial conditions are discussed in detail. The numerical results are found to be in good agreement with the experimental results obtained by Reynolds and Parikh (1981), as far as the displacement thickness behavior is concerned. Certain discrepancies, however, are observed in the results for the skin friction at high frequencies.
- Publication:
-
Unsteady Turbulent Shear Flows
- Pub Date:
- 1981
- Bibcode:
- 1981utsf.proc..159O
- Keywords:
-
- Boundary Layer Stability;
- Pressure Gradients;
- Turbulent Boundary Layer;
- Unsteady Flow;
- Computational Fluid Dynamics;
- Flat Plates;
- Viscous Flow;
- Fluid Mechanics and Heat Transfer