Modeling water droplet condensation and evaporation in DNS of turbulent channel flow

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Russo, E and Kuerten, J.G.M. and van der Geld, C.W.M. and Geurts, B.J. (2011) Modeling water droplet condensation and evaporation in DNS of turbulent channel flow. Journal of Physics: Conference Series, 318 (5). 052019. ISSN 1742-6588

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Abstract:In this paper a point particle model for two-way coupling in water droplet-laden incompressible turbulent flow of air is proposed. The model is based on conservation laws and semi-empirical correlations. It has been implemented and tested in a DNS code based for turbulent channel flow with an Eulerian-Lagrangian approach. The two-way coupling is investigated in terms of the effects of mass and heat transfer on the droplets distributions along the channel wall-normal direction and by comparison of the droplet temperature statistics with respect to the case without evaporation and condensation. A remarkable conclusion is that the presence of evaporating and condensing droplets results in an increase in the non-dimensional heat transfer coefficient of the channel flow represented by the Nusselt number.
Item Type:Article
Copyright:© 2011 IOP Publishing
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/79203
Official URL:http://dx.doi.org/10.1088/1742-6596/318/5/052019
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