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Modelling the formation and dispersal ofstreamwise vortices in turbulentflow

Part of: RAeS Lanchester Lecture Papers

Published online by Cambridge University Press:  04 July 2016

B. E. Launder
B. E. Launder*
Affiliation:
UMIST, Manchester, UK
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Abstract

In many practical circumstances in aeronauticalengineering and in related industries, flows arisewhere concentrated streamwise vorticity is embeddedwithin a turbulent shear flow. The juxtaposition ofthese features makes such flows particularlychallenging to compute using CFD methods. Inparticular, one may be forced to abandon strategiesfor modelling the turbulent stresses that proveadequate in two dimensional shear flows (i.e. inflows where the vorticity vector is orthogonal tothe mean velocity). The paper reviews developmentsin modelling turbulent stresses from their transportequations (rather than by appeal to an eddyviscosity hypothesis) and demonstrates, by way of arange of examples, the capabilities of this approachfor handling flows with concentrated streamwisevorticity.

Information

Type
35th Lanchester Lecture
Information
The Aeronautical Journal , Volume 99 , Issue 990 , December 1995 , pp. 419 - 431
Copyright
Copyright © Royal Aeronautical Society 1995 

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