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Discussion on the utility of dynamical systems approach

Aubry, Nadine and Perry, Tony and Lumley, John and Holmes, Philip and Frisch, Uriel and Sudan, Ravi and Moffatt, Keith and Phillips, Bill and Marsden, Jerry and George, Bill and Roshko, Anatol and Hussain, Fazle and Reynolds, Bill and Leonard, Tony and Moin, Parviz (1990) Discussion on the utility of dynamical systems approach. In: Whither Turbulence? Turbulence at the Crossroads : Proceedings of a Workshop Held at Cornell University, Ithaca, NY, March 22–24, 1989. Lecture Notes in Physics. No.357. Springer-Verlag , Berlin, pp. 292-305. ISBN 978-3-540-52535-6.

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I have a rather provocative question to ask the speakers. What I am wondering is: When you apply the proper orthogonal decomposition - I know this is a procedure you use and it is probably standard - you remove the mean flow and you only look at the perturbations. Why do not you include the mean flow, because if you did you would suppress the cubic terms, and also you would be getting something that would be closer to what people call coherent structures, such as hairpin vortices.

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Additional Information:© 1990 Springer.
Series Name:Lecture Notes in Physics
Issue or Number:357
Record Number:CaltechAUTHORS:20141201-140640640
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ID Code:52238
Deposited By: George Porter
Deposited On:01 Dec 2014 22:28
Last Modified:10 Nov 2021 19:23

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