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Frost formation on a cold surface under turbulent flow.
Author(s) : YANG D. K., LEE K. S., CHA D. J.
Type of article: Article, IJR article
Summary
This study presents a mathematical model to predict the frosting behaviour on a cold surface under turbulent flow. The modelconsists of the standard k-e model for turbulent flow and the diffusion equation for the frost layer. The numerical results showthat turbulent flow promotes the growth of the frost layer on the cold surface, compared to the laminar flow. Increase in airvelocity has little effect on mass transfer under turbulent flow, while frost growth under laminar flow is influenced by the airvelocity. With constant air humidity, the frost layer thickness increases with decreasing air temperature, while the relationshipfor the frost density is reversed. The effect of the air temperature on the mass flux is negligible, compared to the other frostingparameters.
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Pages: 164-169
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Details
- Original title: Frost formation on a cold surface under turbulent flow.
- Record ID : 2006-1245
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 2
- Publication date: 2006/03
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Indexing
- Themes: Refrigerant circulation: piping, control, automation, safety
- Keywords: Humid air; Frosting; Frost; Surface; Modelling; Turbulent flow; Growth
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