hig.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Comparing k-ε models on predictions of an impinging jet for ventilation of an office room
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energiteknik.
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för bygg- energi- och miljöteknik, Energiteknik.ORCID-id: 0000-0003-3472-4210
2011 (engelsk)Inngår i: Roomvent 2011 / [ed] Vojislav Novakovic, Sten Olaf Hanssen, Hans Martin Mathisen, tapir academic press , 2011Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
tapir academic press , 2011.
Emneord [en]
CFD, Impinging jet ventilation, Turbulence model, Wall jet, Measurement
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-10754ISBN: 9788251928120 (tryckt)OAI: oai:DiVA.org:hig-10754DiVA, id: diva2:450171
Konferanse
The 12th International Conference on Air Distribution in Rooms, Trondheim, Norway June 19-22, 2011
Tilgjengelig fra: 2011-12-16 Laget: 2011-10-19 Sist oppdatert: 2018-03-13bibliografisk kontrollert

Open Access i DiVA

fulltext(959 kB)1689 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 959 kBChecksum SHA-512
172fe8f7e3915d537522a1952fca0ae2e3d2ff3ed34f2deaa0fc4c7ae54da0718bfe1f14ae2a952c499d2f1d8ad7f6a959416e8bd7aa09f218ead3163b830a4f
Type fulltextMimetype application/pdf

Personposter BETA

Chen, HuijuanMoshfegh, Bahram

Søk i DiVA

Av forfatter/redaktør
Chen, HuijuanMoshfegh, Bahram
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 1689 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 505 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf