A Mixing-Length Model for the Prediction of Convex Curvature Effects on Turbulent Boundary Layers

[+] Author and Article Information
E. W. Adams, J. P. Johnston

Heat Transfer and Turbulence Mechanics Group, Thermosciences Division of Mechanical Engineering, Stanford University, Stanford, Calif. 94305

J. Eng. Gas Turbines Power 106(1), 142-148 (Jan 01, 1984) (7 pages) doi:10.1115/1.3239527 History: Received December 22, 1982; Online October 15, 2009


A mixing-length model is developed for the prediction of turbulent boundary layers with convex streamwise curvature. For large layer thickness ratio, δ/R > 0.05, the model scales mixing length on the wall radius of curvature, R. For small δ/R, ordinary flat wall modeling is used for the mixing-length profile with curvature corrections, following the recommendations of Eide and Johnston [7]. Effects of streamwise change of curvature are considered; a strong lag from equilibrium is required when R increases downstream. Fifteen separate data sets were compared, including both hydrodynamic and heat transfer results. In this paper, six of these computations are presented and compared to experiment.

Copyright © 1984 by ASME
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