Modelling the Process of Absorption and Desorption of Water in a Sheet beyond the Fiber Saturation Point by Considering a Two-Dimensional Transfer

Kouali, M’hammed El; Bouzon, J.; Vergnaud, J.M.

doi:10.1515/hfsg.1992.46.3.187

Cited by 13 publications

(5 citation statements)

References 9 publications

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“…(Skaar 1958;Stamm 1960;Comstock 1963;Choong 1965;Moschler and Martin 1968). Few studies have been made in the case where the water content is beyond the fiber Saturation point (El Kouali and Vergnaud 1990;El Kouali et al 1992;Mounji et al 1991 and. This problem has sometimes been considered äs very complex, because of the presence of a third type of water: free water, in addition to the bound water and water vapour encountered below the fiber Saturation point.…”

Section: Introductionmentioning

confidence: 99%

Absorption and Desorption of Water in a Wood Beam, Below and Beyond the Fiber Saturation Point, with Three-Dimensional Diffusion

Mounji¹,

Bouzon²

1992

Holzforschung

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Anumerical model with finite differences is built and tested in the case of absorption of water by a wood beam, äs well äs for the desorption in surrounding air. During a large part of the process of absorption-desorption, the moisture content is beyond the fiber Saturation point (FSP).The model considers a three-dimensional transport of water, controlled by diffusion with three principal axes of diffusion. The sample is parallelepipedic with square cross section; the diagonals of this are directed along two principal axes (tangential and radial). The kinetics of absorption and desorption is very well predicted by the model. Moreover, the value of moisture content in the wood can be determined at any place and any time.

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Section: Introductionmentioning

confidence: 99%

Absorption and Desorption of Water in a Wood Beam, Below and Beyond the Fiber Saturation Point, with Three-Dimensional Diffusion

Mounji¹,

Bouzon²

1992

Holzforschung

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“…The main purpose of this study is to describe the absorption process of water by the wood in twodimensions, when the water content is above the fiber saturation point 7 .…”

Section: Introductionmentioning

confidence: 99%

Modeling of absorption process of the water by the wood in two-dimensions

et al. 2020

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Wood is a natural and highly anisotropic material. Therefore, mechanical characteristics of the material depend on the direction of wood. In this paper, we propose to describe the transfer of the water inside the wood in two dimensions by immersing the sample in liquid water. The potential which drives the transport of water through the wood is controlled by the diffusion transient process. A model based on a numerical finite difference method has been found to follow the absorption process of water above the fibers saturation point of two-dimensions.

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“…Models treating desorption of water in wood are generally one-dimensional (Skaar 1958;Stamm 1960;Moscher and Martin 1968;Luikov 1978; Thomas et al 1980; Lewis and Ferguson 1990;Irudayaraj and Wu 1996) or two-dimensional (Rosen 1976;Kouali et al 1992;Boukadida et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Modeling the process of desorption of water in oak (Quercus robur L.) wood

Dedić¹,

Petrović²,

Nesic³

2004

Holzforschung

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The paper describes a three-dimensional model with non-constant coefficients for the heat and mass transport process in desorption of water in wood. The model is based on conservation of mass and energy and uses various parameters obtained by comparing experimental data with numerical results. In this way, the relations between some parameters and average temperature and moisture content are obtained in the form of analytical expressions. Experimental results obtained for temperature profiles during drying of oak wood samples are compared with the model results. Satisfactory agreement is obtained over a range of drying air temperatures and velocities.

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Modelling the Process of Absorption and Desorption of Water in a Sheet beyond the Fiber Saturation Point by Considering a Two-Dimensional Transfer

Cited by 13 publications

References 9 publications

Absorption and Desorption of Water in a Wood Beam, Below and Beyond the Fiber Saturation Point, with Three-Dimensional Diffusion

Absorption and Desorption of Water in a Wood Beam, Below and Beyond the Fiber Saturation Point, with Three-Dimensional Diffusion

Modeling of absorption process of the water by the wood in two-dimensions

Modeling the process of desorption of water in oak (Quercus robur L.) wood

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