Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Comparing k-ε models on predictions of an impinging jet for ventilation of an office room
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.ORCID iD: 0000-0003-3472-4210
2011 (English)In: Roomvent 2011 / [ed] Vojislav Novakovic, Sten Olaf Hanssen, Hans Martin Mathisen, tapir academic press , 2011Conference paper, Published paper (Refereed)
Abstract [en]

The objective of this study is to compare the performance of different k-ε models, i.e. the Standard k-ε, the Renormalization Group (RNG) k-ε, and the Realizable k-ε, with a two-layer model for the prediction of the mean velocity field and the temperature pattern from a newly designed impinging jet supply device for ventilation of an office room. The numerical predictions are validated against the detailed experimental measurements.

The experimental investigation was performed in a test room with the dimensions 4.2×3.6×2.5 m, as a mock-up of a single-person office. Detailed velocity and temperature field measurements including the comfort zone and the jet developing region along the floor were carried out. The in-house made single-sensor hot-wire probe and the thermocouple are measuring instruments used to investigate the mean velocity, turbulence intensity and temperature. The boundary conditions for Computational Fluid Dynamics (CFD) study are obtained from the same set-up measurement.

The results mainly consist of the flow field presentation, i.e., the velocity and temperature profiles in the comfort zone and the jet developing region along the floor. The comparisons between the results from the three versions of the k-ε models and measurements show generally satisfactory agreement, and better consistency is observed at the free jet region and the wall jet region that farther from the impingement zone. Among the three tested turbulence models, RNG shows the best overall performance.

Place, publisher, year, edition, pages
tapir academic press , 2011.
Keyword [en]
CFD, Impinging jet ventilation, Turbulence model, Wall jet, Measurement
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hig:diva-10754ISBN: 9788251928120 (print)OAI: oai:DiVA.org:hig-10754DiVA: diva2:450171
Conference
The 12th International Conference on Air Distribution in Rooms, Trondheim, Norway June 19-22, 2011
Available from: 2011-12-16 Created: 2011-10-19 Last updated: 2017-01-03Bibliographically approved

Open Access in DiVA

fulltext(959 kB)1377 downloads
File information
File name FULLTEXT01.pdfFile size 959 kBChecksum SHA-512
172fe8f7e3915d537522a1952fca0ae2e3d2ff3ed34f2deaa0fc4c7ae54da0718bfe1f14ae2a952c499d2f1d8ad7f6a959416e8bd7aa09f218ead3163b830a4f
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Chen, HuijuanMoshfegh, Bahram
By organisation
Department of Building, Energy and Environmental Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 1377 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 429 hits
CiteExportLink to record
Permanent link

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