An experimental investigation has been carried out on a transitional boundary layer subject to high (initially 9%) free-stream turbulence, strong acceleration , and strong concave curvature (boundary layer thickness between 2% and 5% of the wall radius of curvature). Mean and fluctuating velocity as well as turbulent shear stress are documented and compared to results from equivalent cases on a flat wall and a wall with milder concave curvature. The data show that curvature does have a significant effect, moving the transition location upstream, increasing turbulent transport, and causing skin friction to rise by as much as 40%. Conditional sampling results are presented which show that the curvature effect is present in both the turbulent and non-turbulent zones of the transitional flow.
- International Gas Turbine Institute
Effects of Concave Curvature on Boundary Layer Transition Under High Free-Stream Turbulence Conditions
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Schultz, MP, & Volino, RJ. "Effects of Concave Curvature on Boundary Layer Transition Under High Free-Stream Turbulence Conditions." Proceedings of the ASME Turbo Expo 2001: Power for Land, Sea, and Air. Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration. New Orleans, Louisiana, USA. June 4–7, 2001. V003T01A065. ASME. https://doi.org/10.1115/2001-GT-0191
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