hig.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Numerical Modeling of a Complex Diffuser in a Room with Displacement Ventilation
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.ORCID iD: 0000-0003-2023-689X
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.ORCID iD: 0000-0003-3472-4210
2010 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 45, no 10, 2240-2252 p.Article in journal (Refereed) Published
Abstract [en]

A micro/macro-level approach (MMLA) has been proposed which makes it possible for HVAC engineers to easily study the effect of diffuser characteristics and diffuser placement on thermal comfort and indoor air quality. In this article the MMLA has been used to predict the flow and thermal behavior of the air in the near-zone of a complex low-velocity diffuser. A series of experiment has been carried out to validate the numerical predictions in order to ensure that simulations can be used with confidence to predict indoor airflow. The predictions have been performed by means of steady Reynolds Stress Model (RSM) and the results have good agreement both qualitatively and quantitatively with measurements. However, measurements indicated that the diffusion of the velocity and temperature was to some extent under-predicted by the RSM, which might be related to high instability of the airflow close to the diffuser. This effect might be captured by employing unsteady RSM. The present study also shows the importance of detailed inlet supply modeling in the accuracy of indoor air prediction.

Place, publisher, year, edition, pages
2010. Vol. 45, no 10, 2240-2252 p.
Keyword [en]
Displacement ventilation, Inlet supply, Numerical simulation, Reynolds stress model
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:hig:diva-10303DOI: 10.1016/j.buildenv.2010.04.008ISI: 000279464900019Scopus ID: 2-s2.0-77953541457OAI: oai:DiVA.org:hig-10303DiVA: diva2:442671
Available from: 2011-09-22 Created: 2011-09-22 Last updated: 2017-01-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Cehlin, MathiasMoshfegh, Bahram
By organisation
Department of Building, Energy and Environmental Engineering
In the same journal
Building and Environment
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 782 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf