Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation

Hans Janssen; Bert Blocken; Jan Carmeliet

doi:10.1016/j.ijheatmasstransfer.2006.06.048

Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation

Hans Janssen^*, Bert Blocken, Jan Carmeliet

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

258 Citations (Scopus)

Abstract

While the transfer equations for moisture and heat in building components are currently undergoing standardisation, atmospheric boundary conditions, conservative modelling and numerical efficiency are not addressed. In a first part, this paper adds a comprehensive description of those boundary conditions, emphasising wind-driven rain and vapour exchange, the main moisture supply and removal mechanism, respectively. In the second part the numerical implementation is tackled, with specific attention to the monotony of the spatial discretisation, and to the mass and energy conservation of the temporal discretisation. Both issues are illustrated with exemplary hygrothermal simulations. Numerical efficiency is treated in two follow-up papers.

Original language	English
Pages (from-to)	1128-1140
Number of pages	13
Journal	International Journal of Heat and Mass Transfer
Volume	50
Issue number	5-6
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2006.06.048
Publication status	Published - Mar 2007

Keywords

Atmospheric boundary conditions
Conservative modelling
Heat and moisture transfer
Hygrothermal modelling
Numerical simulation
Porous materials

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijheatmasstransfer.2006.06.048

Cite this

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title = "Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation",

abstract = "While the transfer equations for moisture and heat in building components are currently undergoing standardisation, atmospheric boundary conditions, conservative modelling and numerical efficiency are not addressed. In a first part, this paper adds a comprehensive description of those boundary conditions, emphasising wind-driven rain and vapour exchange, the main moisture supply and removal mechanism, respectively. In the second part the numerical implementation is tackled, with specific attention to the monotony of the spatial discretisation, and to the mass and energy conservation of the temporal discretisation. Both issues are illustrated with exemplary hygrothermal simulations. Numerical efficiency is treated in two follow-up papers.",

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AU - Janssen, Hans

AU - Blocken, Bert

AU - Carmeliet, Jan

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AB - While the transfer equations for moisture and heat in building components are currently undergoing standardisation, atmospheric boundary conditions, conservative modelling and numerical efficiency are not addressed. In a first part, this paper adds a comprehensive description of those boundary conditions, emphasising wind-driven rain and vapour exchange, the main moisture supply and removal mechanism, respectively. In the second part the numerical implementation is tackled, with specific attention to the monotony of the spatial discretisation, and to the mass and energy conservation of the temporal discretisation. Both issues are illustrated with exemplary hygrothermal simulations. Numerical efficiency is treated in two follow-up papers.

KW - Atmospheric boundary conditions

KW - Conservative modelling

KW - Heat and moisture transfer

KW - Hygrothermal modelling

KW - Numerical simulation

KW - Porous materials

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M3 - Article

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SN - 0017-9310

VL - 50

SP - 1128

EP - 1140

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 5-6

ER -

Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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