Experimental analysis and calculation of the onset and development of the boundary layer transition
Abstract
Transition of an incompressible boundary layer, with zero pressure gradient and low free-stream turbulence, is studied. Mean velocity, turbulence and Reynolds shear stress profiles are presented. The development of the wave is clearly shown until the turbulent spots appear. The intermittency phenomenon is studied by conditional sampling of the hot-wire signal. The comparison with calculation results obtained by resolution of a set of transport equations shows a good agreement for the mean characteristics of the flow; discrepancies observed for the turbulent quantities evolution are due to the intermittency phenomenon.
- Publication:
-
In AGARD Laminar-Turbulent Transition 18 p (SEE N78-14316 05-34
- Pub Date:
- October 1977
- Bibcode:
- 1977ltt..agar.....A
- Keywords:
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- Boundary Layer Transition;
- Incompressible Fluids;
- Tollmien-Schlichting Waves;
- Turbulent Flow;
- Flow Measurement;
- Flow Velocity;
- Free Flow;
- Numerical Analysis;
- Shear Stress;
- Fluid Mechanics and Heat Transfer