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
Experimental Investigation of a High Head Model Francis Turbine During Steady-State Operation at Off-Design Conditions
Department of Energy and Process Engineering, Waterpower Laboratory, Norwegian University of Science and Technology, Trondheim, Norway.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik. Department of Mechanical and Industrial Engineering department, Indian Institute of Technology, Roorkee 247667, India.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik. Department of Energy and Process Engineering, Waterpower Laboratory, Norwegian University of Science and Technology, Trondheim, Norway.ORCID-id: 0000-0001-7599-0895
Department of Energy and Process Engineering, Waterpower Laboratory, Norwegian University of Science and Technology, Trondheim, Norway.
2016 (engelsk)Inngår i: IOP Conference Series: Earth and Environment, ISSN 1755-1307, E-ISSN 1755-1315, Vol. 49, nr 8, artikkel-id 062018Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Francis-99 is a set of workshops aiming to determine the state of the art of high head Francis turbine simulations (flow and structure) under steady and transient operating conditions as well as promote their development and knowledge dissemination openly. The first workshop (Trondheim, 2014) focused on steady state conditions. Some concerns were raised regarding uncertainty in the measurements, mainly that there was no clear vortex rope at the Part Load (PL) condition, and that the flow exhibited relatively large asymmetry. The present paper addresses these concerns in order to ensure the quality of the data presented in further workshops. To answer some of these questions, a new set of measurements were performed on the Francis 99 model at Waterpower Laboratory at the Norwegian University of Science and Technology (NTNU). In addition to PL, two other operating conditions were considered, for further use in transient measurements, Best Efficiency (BEP) and High Load (HL). The experiments were carried out at a head of 12 m, with a runner rotational speed of 333 revolutions per minute (rpm). The guide vane opening angle were 6.72 degrees, 9.84 degrees and 12.43 degrees for PL, BEP and HL, respectively. The part load condition has been changed from the first workshop, to ensure a fully developed Rotating Vortex Rope (RVR). The velocity and pressure measurements were carried out in the draft tube cone using 2D PIV and six pressure sensors, respectively. The new PL condition shows a fully developed rotating vortex rope (RVR) in both the frequency analysis and in the phase resolved data. In addition, the measurements confirm an asymmetric flow leaving the runner, as was a concern in the first Francis-99 workshop. This asymmetry was detected at both design and off-design conditions, with a stronger effect during off design.

sted, utgiver, år, opplag, sider
2016. Vol. 49, nr 8, artikkel-id 062018
HSV kategori
Forskningsprogram
Strömningslära
Identifikatorer
URN: urn:nbn:se:ltu:diva-63805DOI: 10.1088/1755-1315/49/6/062018ISI: 000400156200077Scopus ID: 2-s2.0-85012287243OAI: oai:DiVA.org:ltu-63805DiVA, id: diva2:1106945
Konferanse
28th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2016, Grenoble, France; 4 - 8 July 2016
Merknad

2017-02-23 (andbra);Konferensartikel i tidskrift;

Full text license: CC BY

Tilgjengelig fra: 2017-06-08 Laget: 2017-06-08 Sist oppdatert: 2023-11-10bibliografisk kontrollert

Open Access i DiVA

fulltext(3450 kB)9 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 3450 kBChecksum SHA-512
2f427d96bcf92ff1851ad909509508363c4b8918236c685e410eb1764fc255d854a3b8809ea4fcb56962dc4c439a40adcd0f77848388a418c4dfd5c1e73398ab
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekstScopus

Person

Cervantes, Michel J.

Søk i DiVA

Av forfatter/redaktør
Goyal, RahulCervantes, Michel J.
Av organisasjonen
I samme tidsskrift
IOP Conference Series: Earth and Environment

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 9 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: 98 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