A new control-volume finite-element scheme for heterogeneous porous media : application to the drying of softwood
Carr, E. J., Turner, I. W., & Perré, P. (2011) A new control-volume finite-element scheme for heterogeneous porous media : application to the drying of softwood. Chemical Engineering & Technology, 34(7), pp. 1143-1150.
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An improved mesoscopic model is presented for simulating the drying of porous media. The aim of this model is to account for two scales simultaneously: the scale of the whole product and the scale of the heterogeneities of the porous medium. The innovation of this method is the utilization of a new mass-conservative scheme based on the Control-Volume Finite-Element (CV-FE) method that partitions the moisture content field over the individual sub-control volumes surrounding each node within the mesh. Although the new formulation has potential for application across a wide range of transport processes in heterogeneous porous media, the focus here is on applying the model to the drying of small sections of softwood consisting of several growth rings. The results conclude that, when compared to a previously published scheme, only the new mass-conservative formulation correctly captures the true moisture content evolution in the earlywood and latewood components of the growth rings during drying.
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|Item Type:||Journal Article|
|Keywords:||Anisotropy, Control-Volume Finite-Element Method, Heterogeneity, Mesoscopic model, Wood drying, Exponential Integrator, Growth rings|
|Subjects:||Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > APPLIED MATHEMATICS (010200)|
Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > NUMERICAL AND COMPUTATIONAL MATHEMATICS (010300)
Australian and New Zealand Standard Research Classification > AGRICULTURAL AND VETERINARY SCIENCES (070000) > FORESTRY SCIENCES (070500)
|Divisions:||Past > Schools > Mathematical Sciences|
|Copyright Owner:||Copyright 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim|
|Deposited On:||19 Aug 2011 15:01|
|Last Modified:||28 Mar 2013 05:26|
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