LES of droplet-laden non-isothermal channel flow

In this paper subgrid models for LES of droplet-laden non-isothermal channel flow are tested and improved for three Reynolds numbers based on friction velocity, Reτ of 150, 395, and 950 with the aim to develop a simulation method for LES of a droplet-laden Ranque-Hilsch vortex tube. A new subgrid mo...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 318; no. 4; pp. 042056 - 8
Main Authors Michałek, W R, Liew, R, Kuerten, J G M, Zeegers, J C H
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 22.12.2011
Subjects
Approximation
Channel flow
Computational fluid dynamics
Deconvolution
Droplets
Dynamic models
Fluid dynamics
Fluid flow
Friction
Mathematical analysis
Model testing
Physics
Reynolds number
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Summary:In this paper subgrid models for LES of droplet-laden non-isothermal channel flow are tested and improved for three Reynolds numbers based on friction velocity, Reτ of 150, 395, and 950 with the aim to develop a simulation method for LES of a droplet-laden Ranque-Hilsch vortex tube. A new subgrid model combining the beneficial properties of the dynamic eddy-viscosity model and the approximate deconvolution model is proposed. Furthermore, the subgrid model in the droplet equations based on approximate deconvolution is found to perform well also in non-isothermal channel flow. At the highest Reynolds number in the test the dynamic model yields results with a similar accuracy as the approximate deconvolution model.
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ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/318/4/042056