Mesoscopic modeling of vapor transport in wood tangential and radial direction

W. Zillig, D. Derome, J. Carmeliet, J.F.L. Diepens

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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Wood is traditionally modeled as an orthotropic material, with direction dependent transport properties, in this way homogenizing the specific structure of wood: a cellular material with growth rings, consisting of early wood and late wood layers. In this paper we present a mesoscopic model for vapor transport in wood, where earlywood and latewood are modeled as distinct materials. The sorption and vapor transport properties for early- and latewood are determined using a unit cell model with constant cell geometry. These properties are used in two-dimensional calculations of vapor transport in a piece of wood consisting of several growth rings. The mesoscopic results are compared to measurement results and to macroscopic results using homogenized orthotropic transport properties. For vapor transport in radial and tangential direction the difference between meso- and macro modeling of wood is negligible, justifying the vapor transport modeling with homogenized orthotropic transport properties.
Originele taal-2Engels
TitelProceedings of the 10th Conference on the Thermal Performance of the Exterior Envelopes of Whole Buildings, 2-7 December 2007, Clearwater Beach, Florida, USA
UitgeverijAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers
StatusGepubliceerd - 2007
Evenement10th International Conference on Thermal Performance of the Exterior Envelopes of Whole Buildings (Buildings X) - Clearwater, Verenigde Staten van Amerika
Duur: 2 dec 20077 dec 2007
Congresnummer: X

Congres

Congres10th International Conference on Thermal Performance of the Exterior Envelopes of Whole Buildings (Buildings X)
Verkorte titelBuildings 2007
LandVerenigde Staten van Amerika
StadClearwater
Periode2/12/077/12/07
Ander10th international conference on Thermal Performance of the Exterior Envelopes of Whole Buildings, Clearwater Beach, Florida, USA

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Zillig, W., Derome, D., Carmeliet, J., & Diepens, J. F. L. (2007). Mesoscopic modeling of vapor transport in wood tangential and radial direction. In Proceedings of the 10th Conference on the Thermal Performance of the Exterior Envelopes of Whole Buildings, 2-7 December 2007, Clearwater Beach, Florida, USA American Society of Heating, Refrigerating and Air-Conditioning Engineers.