To simulate transitional skin friction or heat transfer, the conditionally averaged Navier-Stokes equations are used. To describe the diffusion of freestream turbulence into the boundary layer and the intermittent laminar-turbulent flow behavior during transition, a turbulence weighting factor τ is used. A transport equation is presented for this τ-factor including convection, diffusion, production, and sink terms. In combination with the conditioned Navier-Stokes equations, this leads to an accurate calculation of flow characteristics within the transitional layer. The method is validated on transitional skin friction and heat transfer measurements, respectively on a flat plate and in a linear turbine cascade.
Modeling of Laminar-Turbulent Transition for High Freestream Turbulence
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division June 26, 2000; revised manuscript received October 13, 2000. Associate Editor: P. Bradshaw.
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Steelant, J., and Dick, E. (October 13, 2000). "Modeling of Laminar-Turbulent Transition for High Freestream Turbulence ." ASME. J. Fluids Eng. March 2001; 123(1): 22–30. https://doi.org/10.1115/1.1340623
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