Large eddy simulation of flow through a streamwise-periodic structure

We present a dynamic large eddy simulation of flow in a periodic open-cell structure in the turbulent regime. The flow domain is represented by a tube with inner diameter of 7mm with integrated highly porous media. Simulations were performed for three different Reynolds numbers ranging from 1200 to...

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Bibliographic Details
Published in:Chemical engineering science 2011-02, Vol.66 (3), p.519-529
Main Authors: Hutter, C., Zenklusen, A., Kuhn, S., Rudolf von Rohr, Ph
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Hydrodynamics of contact apparatus
LES
Mixing
Porous media
Simulation
statistics
Streamwise-periodic structure
Turbulence
turbulent flow
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Summary:We present a dynamic large eddy simulation of flow in a periodic open-cell structure in the turbulent regime. The flow domain is represented by a tube with inner diameter of 7mm with integrated highly porous media. Simulations were performed for three different Reynolds numbers ranging from 1200 to 4500 based on the empty tube diameter. The obtained results were compared to experimental data for which measurements were performed downstream of the same periodic geometry manufactured from a transparent material by stereolithography. The measured pressure drop and turbulence statistics compare well to the results of the large eddy simulations. The numerical results give an insight into the forced convection mechanism within the porous media and enhance the understanding of flow through foamlike structures. Furthermore specific geometric details like the influence of the ligament shape of the porous material can be investigated applying this technique.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2010.11.015