Using computational modeling to enhance the understanding of the flow of supercritical carbon dioxide in wood materials

B A Gething; J J Janowiak; Jeffrey J Morrell

doi:10.1016/j.supflu.2013.05.019

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Using computational modeling to enhance the understanding of the flow of supercritical carbon dioxide in wood materials

Journal article

Peer reviewed

Using computational modeling to enhance the understanding of the flow of supercritical carbon dioxide in wood materials

B A Gething, J J Janowiak and Jeffrey J Morrell

Journal of Supercritical Fluids, Vol.82, pp.27-33

2013

DOI: https://doi.org/10.1016/j.supflu.2013.05.019

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Abstract

supercritical

carbon dioxide

flow modeling

wood impregnation

permeability

The flow of supercritical carbon dioxide in wood materials was investigated through the development of a computational model based on the viscous flow of a fluid traveling through a porous medium. Douglas-fir specimens were prepared by inserting pressure sensors into the cross-section of a specimen, so that a pressure profile could be measured during supercritical treatment. The computational model was evaluated by comparing the predicted values to the ones measured experimentally. Model performance was also assessed through comparisons with another proposed model with a similar theoretical foundation, which was applied to spruce wood under different test conditions. The model was a relatively accurate predictor of internal pressure development at sub-critical pressures, while a greater disparity was observed at certain pressures above the critical point. These disparities were observed in the prior model as well, but were not as large, and the rationale for these findings is presented. The present study confirmed that the theoretical foundation for the model, viscous flow through a porous substrate using Darcy's Law, is applicable to more than one wood species, and thus possesses the potential to be applied to a variety of wood species and supercritical treatment conditions.

Details

Title: Using computational modeling to enhance the understanding of the flow of supercritical carbon dioxide in wood materials
Authors: B A Gething (Author) - Pennsylvania State University, United States
J J Janowiak (Author) - Pennsylvania State University, United States
Jeffrey J Morrell (Author) - Oregon State University, United States
Publication details: Journal of Supercritical Fluids, Vol.82, pp.27-33
Publisher: Elsevier BV
Date published: 2013
DOI: 10.1016/j.supflu.2013.05.019
ISSN: 0896-8446
Organisation Unit: University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
Language: English
Record Identifier: 99450876302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Chemistry, Physical; Engineering, Chemical