Aero‐hygrothermisches Verhalten von Umfassungskonstruktionen mit Hohlräumen

Gnoth, Steffen; Hänsel, Frank; Häupl, Peter; Fechner, Heiko

doi:10.1002/bapi.200810049

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…This brings along the advantage that two separately developed models can be coupled and the developer of the drying model should only be concerned with the implementation of the coupling procedure. For example Gnoth et al [35] developed a coupling procedure between a CFD model developed for cavities and a commercially available HAM model, Delphin® [22].…”

Section: Numerical Modelling: Coupling Ham With Cfdmentioning

confidence: 99%

Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD

Belleghem

Steeman

Janssen

et al. 2014

Building and Environment

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Moisture-related damage is an important issue when looking at the performance of building envelopes. In order to accurately predict the moisture behaviour of building components, building designers can resort to Heat, Air and Moisture (HAM) models. In this paper a newly developed heat and mass transfer model that is implemented in a 3D finite volume solver, Fluent®, is presented. This allows a simultaneous modelling approach of both the convective conditions surrounding a porous material and the heat and moisture transport in the porous material governed by diffusion. Unlike most HAM models that often confine to constant convective transport coefficients it is now possible to better predict these convective boundary conditions. An important application of the model is the convective drying of porous building materials. Especially during the first drying stage, the drying rate is determined by the convective boundary conditions. The model was validated against a convective drying experiment from literature, in which a saturated ceramic brick sample is dried by flowing dry air over one side of the sample surface. Temperature and relative humidity measurements at different depths in the sample, moisture distribution profiles and mass loss measurements were compared with simulation results. An overall good agreement between the coupled model and the experiments was found, however, the model predicted the constant drying rate period better than the falling rate period. This was improved by adjusting the material properties. The adjustment of the material properties was supported by neutron radiography measurements.

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Section: Numerical Modelling: Coupling Ham With Cfdmentioning

confidence: 99%

Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD

Belleghem

Steeman

Janssen

et al. 2014

Building and Environment

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show abstract

“…Bauphysik 44 (2022), Heft 3 P. Häupl: Raumklimauntersuchung im "schweren" Goldenen Saal in Nürnberg und in der "leichten" Glaseinhausung der Busmannkapelle in Dresden (7) mit L Wärmeübertragungswert (temperaturbezogener Lüftungswärmestrom) infolge Lüftung in W/K Zwischen Außen-und Raumluft über die Fenster transmittierter Wärmestrom:…”

Section: Modellierungunclassified

Raumklimauntersuchung im „schweren” Goldenen Saal in Nürnberg und in der „leichten” Glaseinhausung der Busmannkapelle in Dresden

Häupl¹

2022

Bauphysik

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Auf der Basis einer vereinfachten Energie‐ und Feuchtebilanz für den bauklimatisch kritischen Raum eines Gebäudes ist ein Modell und Programm CLIMT für die Berechnung der Raumlufttemperatur und Raumluftfeuchte entwickelt worden. Außerdem ermöglicht das nutzerfreundliche Programm GLIG die Generierung der Außenklimadaten (Stundenwerte der Temperatur, der Luftfeuchte, der kurzwelligen Direkt‐ und Diffusstrahlung usw.). Die Rechenergebnisse sind mit Messwerten in zwei aktuellen Gebäuden in Deutschland verglichen worden: der Goldene Saal unter der Zeppelintribüne, der vom Hochbauamt Nürnberg seit 2015 renoviert wird und die Glaseinhausung der Busmannkapellenreplik in Dresden. Die Übereinstimmung zwischen den stündlichen Rechenwerten für die Raumlufttemperaturen und Raumluftfeuchten in den Jahren 2015 bzw. 2018 und den Messwerten in beiden Gebäuden ist beinahe perfekt. Das ist von großer Bedeutung für die Planung aller Sanierungsmaßnahmen und die museale Nutzung beider Gebäude.

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The drying out capacity of a ventilated internal cavity with a heating cable, analytical model and empirical verification

Gudmundsson¹,

Klintberg²,

Söderström³

2012

Building and Environment

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Aero‐hygrothermisches Verhalten von Umfassungskonstruktionen mit Hohlräumen

Cited by 3 publications

References 2 publications

Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD

Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD

Raumklimauntersuchung im „schweren” Goldenen Saal in Nürnberg und in der „leichten” Glaseinhausung der Busmannkapelle in Dresden

The drying out capacity of a ventilated internal cavity with a heating cable, analytical model and empirical verification

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