Digitala Vetenskapliga Arkivet

Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Actuator line simulations of a Joukowsky and Tjaereborg rotor using spectral element and finite volume methods
Royal Inst Technol, KTH Mech, Linne FLOW Ctr, SE-10044 Stockholm, Sweden;Royal Inst Technol, Swedish ESci Res Ctr SeRC, SE-10044 Stockholm, Sweden.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper.
Royal Inst Technol, KTH Mech, Linne FLOW Ctr, SE-10044 Stockholm, Sweden;Royal Inst Technol, Swedish ESci Res Ctr SeRC, SE-10044 Stockholm, Sweden.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper. Royal Inst Technol, KTH Mech, Linne FLOW Ctr, SE-10044 Stockholm, Sweden;Royal Inst Technol, Swedish ESci Res Ctr SeRC, SE-10044 Stockholm, Sweden.
Vise andre og tillknytning
2016 (engelsk)Inngår i: SCIENCE OF MAKING TORQUE FROM WIND (TORQUE 2016), 2016, artikkel-id 082011Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The wake structure behind a wind turbine, generated by the spectral element code Nek5000, is compared with that from the finite volume code EllipSys3D. The wind turbine blades are modeled using the actuator line method. We conduct the comparison on two different setups. One is based on an idealized rotor approximation with constant circulation imposed along the blades corresponding to Glauert's optimal operating condition, and the other is the Tjareborg wind turbine. The focus lies on analyzing the differences in the wake structures entailed by the different codes and corresponding setups. The comparisons show good agreement for the defining parameters of the wake such as the wake expansion, helix pitch and circulation of the helical vortices. Differences can be related to the lower numerical dissipation in Nek5000 and to the domain differences at the rotor center. At comparable resolution Nek5000 yields more accurate results. It is observed that in the spectral element method the helical vortices, both at the tip and root of the actuator lines, retain their initial swirl velocity distribution for a longer distance in the near wake. This results in a lower vortex core growth and larger maximum vorticity along the wake. Additionally, it is observed that the break down process of the spiral tip vortices is significantly different between the two methods, with vortex merging occurring immediately after the onset of instability in the finite volume code, while Nek5000 simulations exhibit a 2-3 radii period of vortex pairing before merging.

sted, utgiver, år, opplag, sider
2016. artikkel-id 082011
Serie
Journal of Physics Conference Series, ISSN 1742-6588, E-ISSN 1742-6596 ; 753
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-400867DOI: 10.1088/1742-6596/753/8/082011ISI: 000436325702068OAI: oai:DiVA.org:uu-400867DiVA, id: diva2:1382603
Konferanse
Conference on Science of Making Torque from Wind (TORQUE), OCT 05-07, 2016, Munich, GERMANY
Tilgjengelig fra: 2020-01-03 Laget: 2020-01-03 Sist oppdatert: 2020-01-03bibliografisk kontrollert

Open Access i DiVA

fulltext(4977 kB)213 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 4977 kBChecksum SHA-512
7f476fa1049bcb4584b1cf839b25f332b5a18dc495a1888e8e7cb0cd535f6461efe28173501c92f55446b4574cd6e86d78a97f2bfad0b9641d7697769f483388
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Søk i DiVA

Av forfatter/redaktør
Sarmast, SasanIvanell, Stefan
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 213 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 114 treff
RefereraExporteraLink to record
Permanent link

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