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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Closure theories for inhomogeneous turbulence

## Closure theories for inhomogeneous turbulenceAdd to your list(s) Download to your calendar using vCal - Rubinstein, R (NASA Langley)
- Thursday 02 October 2008, 17:40-18:10
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. The Nature of High Reynolds Number Turbulence Although Kraichnan formulated the Direct Interaction Approximation and the Test-Field model for general problems of inhomogeneous turbulence, the resulting equations, requiring repeated multiple integrations over the flow domain, are both difficult to understand and difficult to apply in practice; in the homogeneous case, triad interactions provide the key to unraveling the physics of the approximation. The goal of this work is to formulate the closure theory of some special inhomogeneous problems with comparable simplicity. It is done by decomposing the inhomogeneous problem into a set of coupled quasi-homogeneous problems, each of which admits a simple formulation. The formalism will be applied to the problem of weakly inhomogeneous turbulence, where previous heuristic theories have been incomplete. The same formalism applies to problems admitting scaling transformations; it will be applied to give a simple formulation of the problem of turbulence in a half-space. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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