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Towards a calibration of the length-scale equation

✍ Scribed by Stéphane Catris; Bertrand Aupoix

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
264 KB
Volume
21
Category
Article
ISSN
0142-727X

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✦ Synopsis

A complete set of constraints is proposed to force a high Reynolds number turbulence model to correctly predict the behaviour of the outer part of the boundary layer, whatever the pressure gradient and the Reynolds number. The constraints are general and are presently applied to a two-equation model, using the Boussinesq hypothesis together with new forms of the inhomogeneous terms in the length and velocity scale transport equations. No classical turbulence model satis®es all the constraints. A prototype model, which satis®es all the constraints, is shown to yield fair predictions.

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