The Prediction of Turbulent Boundary Layers. G.U. Aero Report 7702

Galbraith, R.A.M. (1977) The Prediction of Turbulent Boundary Layers. G.U. Aero Report 7702. Technical Report. Department of Aeronautics and Fluid Mechanics, University of Glasgow.

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Summary: In the past there has been some argument about how the problem of predicting turbulent boundary layers could best be handled. The present paper attempts to alleviate some of the disagreement and separately treats the model and the solution procedure. It is shown that the choice of dependent variable for the closure hypothesis is of minor importance when compared to the final form of the model. Consideration is also given to the way in which simple models, such as the constant eddy-viscosity assumption, may be improved and also the possible limitation of such procedures. This, it is suggested, is when, of necessity, the specification of the modelled quantity is by a complicated rate equation. Here the use of the turbulent transport equations as a basis for the model is accepted. However, it is concluded that until the complex and hopefully more general turbulence models can predict relatively uncomplicated flows, with at least as good an accuracy as the simpler models discussed, then their use in such flows is superfluous. Finally, a brief discussion on integral methods suggests, that where a suitable velocity profile family exists, such procedures can form the basis of a fast, simple and accurate method of solution.

Item Type:Research Reports or Papers (Technical Report)
Glasgow Author(s) Enlighten ID:Galbraith, Professor Roderick
Authors: Galbraith, R.A.M.
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Publisher:Department of Aeronautics and Fluid Mechanics, University of Glasgow
Copyright Holders:Copyright © 1977 Department of Aeronautics and Fluid Mechanics
Publisher Policy:Reproduced with the permission of the Department
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