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Large eddy simulation of the flow through the blades of a swirl generator
2000 (English)In: International Journal of Heat and Fluid Flow, ISSN 0142-727X, E-ISSN 1879-2278, Vol. 21, no 5, 664-673 p.Article in journal (Refereed) Published
Abstract [en]

Subsonic turbulent flow between the blades of a swirl generator is considered using large eddy simulations (LES). The boundary layer exhibits transition in the upstream parts of the blade. Further downstream, the Row separates both on the suction and the pressure surfaces. In the boundary layer, one may note the streaky vortices. In addition, due to the blade surface curvature large, time-dependent streamwise vortices are formed. The wake of the blades also contains large scale, time-dependent structures. These phenomena are captured directly by LES. In our study, we use two different subgrid scale (SGS) models: the first model is an implicit model and the second is a novel dynamic model dubbed the dynamic divergence model (DDM). The effects of the SGS model and the grid resolution are also investigated.

Place, publisher, year, edition, pages
2000. Vol. 21, no 5, 664-673 p.
Keyword [en]
large eddy simulation, turbulence, swirl generator, turbulent, jet
Identifiers
URN: urn:nbn:se:kth:diva-20053ISI: 000089456400026OAI: oai:DiVA.org:kth-20053DiVA: diva2:338746
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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