Journal ArticleDOI
BEM numerical simulation of coupled heat, air and moisture flow through a multilayered porous solid
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In this paper, the problem of coupled moisture, air and heat energy transport through a porous solid is studied numerically using singular boundary integral representation of the governing equations, which provides highly accurate numerical results.Abstract:
The problem of unsteady coupled moisture, air and heat energy transport through a porous solid is studied numerically using singular boundary integral representation of the governing equations. The governing transport equations are written and solved for the continuous driving potentials, i.e. relative humidity, temperature and air pressure. The boundary and interface conditions are discussed. The integral equations are discretized using mixed-boundary elements and a multidomain method also known as the macro-elements technique. The numerical model uses quadratic approximation over space and linear approximation over time for all field functions, which provides highly accurate numerical results. Three test benchmark examples (moisture uptake in a semi-infinite region, air transfer through a lightweight wall, and moisture redistribution inside a multilayered wall with capillary-active interior insulation), were analyzed to show the applicability and accuracy of the simulation model developed.read more
Citations
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Journal ArticleDOI
Influence of a period of wet weather on the heat transfer across a wall covered with uncoated medium density expanded cork
TL;DR: In this article, the authors evaluated the importance of varying moisture content on the thermal behavior of a wall covered with uncoated medium density cork agglomerate when exposed to rain.
Journal ArticleDOI
The moisture regime calculation of single-layer enclosing structures on the basis of the discrete-continuum method application
TL;DR: In this paper, a discrete-continuum method based on Gagarin's moisture potential was proposed to determine the moisture potential in a single-layer enclosing structure under continuous control for temperature distribution.
Journal ArticleDOI
Moisture behavior calculation of single-layer enclosing structure by means of discrete-continuous method
TL;DR: In this article, a mathematical model for unsteady-state moisture behavior calculation of single-layer enclosing structures by means of moisture potential and discrete-continuous method is proposed.
Journal ArticleDOI
Transient simulation of coupled heat and moisture flow through a multi-layer porous solid exposed to solar heat flux
TL;DR: In this article, the simulation of coupled moisture and heat transport through a multi-layer porous solid is presented, where the governing partial-differential transport equations are written and solved simultaneously for the continuous driving potentials.
Journal ArticleDOI
Simulation of heat and moisture flow through walls covered with uncoated medium density expanded cork
TL;DR: In this paper, the influence of the solar heat flux, temperature, and relative humidity on OSB and concrete walls covered with uncoated medium density expanded cork was evaluated experimentally.
References
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Book
The Boundary Element Method for Engineers
TL;DR: This research attacked the mode confusion problem by developing a modeling framework to estimate the number of neurons in the response of the immune system to earthquake-related injuries.
Journal ArticleDOI
Assessment method of numerical prediction models for combined heat, air and moisture transfer in building components: benchmarks for one-dimensional cases
Carl-Eric Hagentoft,Angela Sasic Kalagasidis,Bijan Adl-Zarrabi,Staf Roels,Jan Carmeliet,Hugo Hens,John Grunewald,Max Funk,Rachel Becker,Dina Shamir,Olaf C. G. Adan,Harold Brocken,Kumar Kumaran,Reda Djebbar +13 more
TL;DR: In this paper, the authors present five numerical benchmark cases for the quality assessment of simulation models for one-dimensional heat, air and moisture (HAM) transfer, which is an outcome of the EU-initiated project for standardisation of HAM calculation methods.
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