A numerical method for the evaluation of non-linear transient moisture flow in cellulosic materials
(2006) In International Journal for Numerical Methods in Engineering 66(12). p.1859-1883- Abstract
- A numerical method for the transient moisture flow in porous cellulosic materials like paper and wood is presented. The derivation of the model is based on mass conservation for a mixture containing a vapour phase and an adsorbed water phase embedded in a porous solid material. The principle of virtual moisture concentrations in conjunction with a consistent linearization procedure is used to produce the iterative finite element equations. A monolithic solution strategy is chosen in order to solve the coupled non-symmetric equation system. A model for the development of higher order sorption hysteresis is also developed. The model is capable of describing cyclic hardening as well as cyclic softening of the equilibrium water concentration.... (More)
- A numerical method for the transient moisture flow in porous cellulosic materials like paper and wood is presented. The derivation of the model is based on mass conservation for a mixture containing a vapour phase and an adsorbed water phase embedded in a porous solid material. The principle of virtual moisture concentrations in conjunction with a consistent linearization procedure is used to produce the iterative finite element equations. A monolithic solution strategy is chosen in order to solve the coupled non-symmetric equation system. A model for the development of higher order sorption hysteresis is also developed. The model is capable of describing cyclic hardening as well as cyclic softening of the equilibrium water concentration. The model is verified by comparison with the measured response to natural variations in temperature and humidity. A close agreement of the simulated results to measured data is found. Copyright (c) 2005 John Wiley & Sons, Ltd. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/404532
- author
- Nyman, Ulf LU ; Gustafsson, Per-Johan LU ; Johannesson, Björn LU and Hagglund, R
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- paper material, hysteresis, sorption, moisture transport, mixture model, multiphase model, virtual moisture concentration
- in
- International Journal for Numerical Methods in Engineering
- volume
- 66
- issue
- 12
- pages
- 1859 - 1883
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000238703200002
- scopus:33745455370
- ISSN
- 1097-0207
- DOI
- 10.1002/nme.1597
- language
- English
- LU publication?
- yes
- id
- 762255ac-ecbe-4ea1-bfa1-70c06625804b (old id 404532)
- date added to LUP
- 2016-04-01 12:14:15
- date last changed
- 2022-04-13 08:11:08
@article{762255ac-ecbe-4ea1-bfa1-70c06625804b,
abstract = {{A numerical method for the transient moisture flow in porous cellulosic materials like paper and wood is presented. The derivation of the model is based on mass conservation for a mixture containing a vapour phase and an adsorbed water phase embedded in a porous solid material. The principle of virtual moisture concentrations in conjunction with a consistent linearization procedure is used to produce the iterative finite element equations. A monolithic solution strategy is chosen in order to solve the coupled non-symmetric equation system. A model for the development of higher order sorption hysteresis is also developed. The model is capable of describing cyclic hardening as well as cyclic softening of the equilibrium water concentration. The model is verified by comparison with the measured response to natural variations in temperature and humidity. A close agreement of the simulated results to measured data is found. Copyright (c) 2005 John Wiley & Sons, Ltd.}},
author = {{Nyman, Ulf and Gustafsson, Per-Johan and Johannesson, Björn and Hagglund, R}},
issn = {{1097-0207}},
keywords = {{paper material; hysteresis; sorption; moisture transport; mixture model; multiphase model; virtual moisture concentration}},
language = {{eng}},
number = {{12}},
pages = {{1859--1883}},
publisher = {{John Wiley & Sons Inc.}},
series = {{International Journal for Numerical Methods in Engineering}},
title = {{A numerical method for the evaluation of non-linear transient moisture flow in cellulosic materials}},
url = {{http://dx.doi.org/10.1002/nme.1597}},
doi = {{10.1002/nme.1597}},
volume = {{66}},
year = {{2006}},
}