Calculation of compressible and incompressible flow boundary layers, taking into account longitudinal and transverse wall curvature
Abstract
The flow equations for laminar and turbulent flat and axisymmetric wall boundary layers were investigated. The boundary layer equations are given in a curvilinear orthogonal coordinate system, with an estimation of the conservation equations. An extended Falkner-Skan equation for laminar incompressible boundary layers reveals the influence of wall curvature. Turbulent flow is treated with a Wilcox-Traci two-equation turbulence model which takes into account wall curvature effects and laminar-turbulent transition. A comparison between numerical calculation and experiments shows the influence of wall curvature on boundary layer formation. The limits of the numerical method are demonstrated, especially if laminar-turbulent transition is considered.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1981
- Bibcode:
- 1981STIN...8335335P
- Keywords:
-
- Boundary Layer Flow;
- Compressible Flow;
- Computational Fluid Dynamics;
- Curvature;
- Flow Equations;
- Incompressible Flow;
- Wall Flow;
- Boundary Layer Transition;
- Laminar Flow;
- Turbulence Models;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer