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Prediction of turbulent heat transfer for industrial drying processes - turbulence model assessment

 
: Ye, Qiaoyan; Pulli, Karlheinz; Scheibe, Andreas

International Association for the Engineering Analysis Community -NAFEMS-:
The analysis advantage. Perspectives on engineering simulation for today and beyond : NWC 2009, International Conference on Simulation Technology for the Engineering Analysis Community, NAFEMS World Congress, June 16th-19th, Crete, Summary of Proceedings & CD-ROM
Glasgow: NAFEMS, 2009
ISBN: 978-1-874376-42-2
13 pp.
International Congress on Simulation Technology for the Engineering Analysis Community (NWC) <2009, Crete>
International Association for the Engineering Analysis Community (World Congress) <2009, Crete>
English
Conference Paper
Fraunhofer IPA ()
drying; Trocknen (Lackiertechnik); computational fluid dynamic (CFD); Trocknung; Wärmeübertragung

Abstract
This paper presents numerical investigations of turbulent heat transfer for industrial drying processes. The CFD code FLUENT was applied. The performance of various turbulence models, especially the grid sensitivity to the prediction of the Nusselt number, was tested using available experimental data of single jet impingement and the DNS data of channel flow. The sst-kw turbulence model with enhanced wall function that was found to give a reasonably accurate prediction of heat transfer with lower grid sensitivity was applied to the flow calculation in dryers. Flat sheets as well as more complicated geometries of substrates, for instance, a truck chassis were used in the simulations. The calculated heating-up behaviour on the substrates was compared with experimental results.

: http://publica.fraunhofer.de/documents/N-100700.html