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Influence of sample temperature on drying of individual porous spheres
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-8235-9639
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
2011 (English)Conference paper, Oral presentation only (Refereed)
Abstract [en]

Heat and mass transport within a porous sphere during drying is here modeled and simulations of the surface evaporation period are carried out with aim to investigate the influence of the initial temperature on the drying time. A three dimensional spherical domain is formed and governing equations are set up for the flow past it. The local heat and mass transfer at the surface is determined from simulations of the surrounding fluid flow with aid of Computational Fluid Dynamics. For the studied conditions, the results show that increasing the initial temperature will decrease the drying time in a rather linear manner. There is also a distinct reduction in drying time if the humidity of the surrounding air is lowered. Increasing the initial temperature could thus be an effective way to reduce problems due to condensation and to decrease the drying time.

Place, publisher, year, edition, pages
2011.
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-32469Local ID: 6f98425b-7dd9-4eda-bfe2-3cf57110cb5eOAI: oai:DiVA.org:ltu-32469DiVA, id: diva2:1005703
Conference
Asia-Pacific Drying Conference : 18/09/2011 - 20/11/2011
Note
Godkänd; 2011; 20111209 (annlju)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-12-01Bibliographically approved

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