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Discrete and continuous modelling of heat and mass transport in drying of a bed of iron ore pellets
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.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
2012 (English)In: Drying Technology, ISSN 0737-3937, E-ISSN 1532-2300, Vol. 30, no 7, p. 760-773Article in journal (Refereed) Published
Abstract [en]

Drying of a porous bed of iron ore pellets is here considered by modeling a discrete two-dimensional system of round pellets. As a complement to the two-dimensional model, a continuous one-dimensional model enabling fast calculations is developed. Results from the discrete model show that the temperature front advances faster in areas with large distances between the pellets. In areas with low flow speed, the temperature of the pellets increases with a relatively slow rate. The water inside these pellets will therefore remain for a long time. The continuous model fits the discrete model very well for a regular distribution of equal-sized particles. A discrete model with irregular packing will, compared to the continuous model, show a larger variation in the distribution of temperature and moisture content in the final phase of drying.

Place, publisher, year, edition, pages
2012. Vol. 30, no 7, p. 760-773
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-3596DOI: 10.1080/07373937.2012.662567ISI: 000303236100008Scopus ID: 2-s2.0-84860202254Local ID: 16c17696-70da-4f9b-abf9-b15454244f39OAI: oai:DiVA.org:ltu-3596DiVA, id: diva2:976454
Note
Validerad; 2012; 20120215 (stlu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Ljung, Anna-LenaFrishfelds, VilnisLundström, T. StaffanMarjavaara, Daniel

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