Numerical modelling of microwave heating of frozen wood

The heating process of frozen wood exposed to plane microwaves is numerically investigated. The nonlinear heat conduction problem involving phase change such as wood freezing is solved by a specific 3D volumetric enthalpy‐based finite element method. Dielectric and thermal properties are a function...

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Bibliographic Details
Published in:Canadian journal of chemical engineering 2013-09, Vol.91 (9), p.1582-1589
Main Authors: Erchiqui, F., Annasabi, Z., Koubaa, A., Slaoui-Hasnaoui, F., Kaddami, H.
Format: Article
Language:English
Subjects:
Beer-Lambert's law
Freezing
Frozen
frozen wood
Heating
Mathematical analysis
Mathematical models
microwave heating
Microwaves
Moisture content
trembling aspen
Wood
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Summary:The heating process of frozen wood exposed to plane microwaves is numerically investigated. The nonlinear heat conduction problem involving phase change such as wood freezing is solved by a specific 3D volumetric enthalpy‐based finite element method. Dielectric and thermal properties are a function of temperature and moisture content. The numerical model is validated by experimental and analytical means. As an application, we studied the effect of moisture content and frequency on microwave heating of trembling aspen wood.
ISSN:0008-4034
1939-019X
DOI:10.1002/cjce.21826