Integral boundary-layer models for turbulent separated flows
Abstract
Two-dimensional, integral boundary-layer methods of the entrainment and dissipation type, with closure relationships which account for turbulent separated flows through the velocity and turbulence models, are developed. Kinematic shape factor relations used in the two methods are evaluated by comparison with recently obtained experimental data for separated flows. Prescribed-displacement-thickness computations are made with both methods and compared to experiment for a series of separated flows, including low speed and transonic shock-induced separation. Effects of upstream history on the turbulent shear stress development are shown to be important for the accurate prediction of the separated flows considered and the experimental trends are reasonably modeled by a rate equation derived from the turbulent kinetic energy equation.
- Publication:
-
17th Fluid Dynamics, Plasma Dynamics, and Lasers Conference
- Pub Date:
- June 1984
- Bibcode:
- 1984fdpd.confS....T
- Keywords:
-
- Boundary Integral Method;
- Computational Fluid Dynamics;
- Separated Flow;
- Turbulence Models;
- Turbulent Boundary Layer;
- Two Dimensional Flow;
- Boundary Layer Equations;
- Correlation;
- Equilibrium Flow;
- Skin Friction;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer