Numerical study of the Winter-Kennedy method for relative transient flow rate measurement
Earth and Environment
Document identifier: oai:DiVA.org:ltu-77298
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10.1088/1755-1315/405/1/012022Keyword: Engineering and Technology,
Mechanical Engineering,
Fluid Mechanics and Acoustics,
Teknik och teknologier,
Maskinteknik,
Strömningsmekanik och akustik,
Winter-Kennedy,
Transient flow rate,
Hydro power,
Strömningslära,
Fluid MechanicsPublication year: 2019Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: The Winter-Kennedy (WK) method is used to estimate relative flow rate using the differential pressure between two taps located at a radial section of a spiral casing (SC). It is widely used in index testing, for double regulated turbines optimization and sometimes for continuous discharge measurement in low head plants. This paper explores the possibility of using the WK method for relative transient flow rate measurements. A numerical model of a Kaplan model turbine from the penstock to the distributor has been developed. Unsteady RANS simulations with k-ω SST turbulence model are performed. Previously conducted experiments on the model turbine are used to validate the numerical results. In the simulations, the guide vanes (GVs) are closed from 26.5°, the best efficient point (BEP), to about 5° opening angle. Two azimuthal locations of the SC and four different WK configurations at each location are considered. The variation of the WK coefficients with time are investigated and compared to the ones at several stationary GV angles. The results showed a difference between the WK coefficients obtained at transient and stationary operations. However, there may be a possibility of using the WK method during transients by locating the pressure taps in appropriate locations for an acceptable variation of the WK coefficient from its BEP value.
The research has been funded by Swedish Hydropower Centre (SVC).
Authors
Binaya Baidar
Luleå tekniska universitet; Strömningslära och experimentell mekanik
Other publications
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Jonathan Nicolle
Institut de recherche d'Hydro-Québec, Varennes, QC, Canada
Other publications
>>
Bhupendra K Gandhi
Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, India
Other publications
>>
Michel Cervantes
Luleå tekniska universitet; Strömningslära och experimentell mekanik
Other publications
>>
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identifier: oai:DiVA.org:ltu-77298
datestamp: 2021-04-19T12:54:44Z
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recordCreationDate: 2020-01-07
identifier:
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10.1088/1755-1315/405/1/012022
2-s2.0-85078108189
titleInfo:
@attributes:
lang: eng
title: Numerical study of the Winter-Kennedy method for relative transient flow rate measurement
abstract: The Winter-Kennedy (WK) method is used to estimate relative flow rate using the differential pressure between two taps located at a radial section of a spiral casing (SC). It is widely used in index testing for double regulated turbines optimization and sometimes for continuous discharge measurement in low head plants. This paper explores the possibility of using the WK method for relative transient flow rate measurements. A numerical model of a Kaplan model turbine from the penstock to the distributor has been developed. Unsteady RANS simulations with k-ω SST turbulence model are performed. Previously conducted experiments on the model turbine are used to validate the numerical results. In the simulations the guide vanes (GVs) are closed from 26.5° the best efficient point (BEP) to about 5° opening angle. Two azimuthal locations of the SC and four different WK configurations at each location are considered. The variation of the WK coefficients with time are investigated and compared to the ones at several stationary GV angles. The results showed a difference between the WK coefficients obtained at transient and stationary operations. However there may be a possibility of using the WK method during transients by locating the pressure taps in appropriate locations for an acceptable variation of the WK coefficient from its BEP value.
The research has been funded by Swedish Hydropower Centre (SVC).
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Engineering and Technology
Mechanical Engineering
Fluid Mechanics and Acoustics
@attributes:
lang: swe
authority: uka.se
topic:
Teknik och teknologier
Maskinteknik
Strömningsmekanik och akustik
@attributes:
lang: eng
topic: Winter-Kennedy
@attributes:
lang: eng
topic: transient flow rate
@attributes:
lang: eng
topic: hydro power
@attributes:
lang: swe
authority: ltu
topic: Strömningslära
genre: Research subject
@attributes:
lang: eng
authority: ltu
topic: Fluid Mechanics
genre: Research subject
language:
languageTerm: eng
genre:
publication/journal-article
ref
note:
Published
4
Konferensartikel i tidskrift
name:
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type: personal
authority: ltu
namePart:
Baidar
Binaya
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Strömningslära och experimentell mekanik
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binbai
0000-0001-5833-6736
@attributes:
type: personal
namePart:
Nicolle
Jonathan
role:
roleTerm: aut
affiliation: Institut de recherche d'Hydro-Québec Varennes QC Canada
@attributes:
type: personal
namePart:
Gandhi
Bhupendra K
role:
roleTerm: aut
affiliation: Department of Mechanical and Industrial Engineering Indian Institute of Technology Roorkee India
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type: personal
authority: ltu
namePart:
Cervantes
Michel
role:
roleTerm: aut
affiliation:
Luleå tekniska universitet
Strömningslära och experimentell mekanik
nameIdentifier:
cervante
0000-0001-7599-0895
originInfo:
dateIssued: 2019
publisher: Institute of Physics (IOP)
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type: host
titleInfo:
title: IOP Conference Series
subTitle: Earth and Environment
identifier:
1755-1307
1755-1315
part:
detail:
@attributes:
type: volume
number: 405
@attributes:
type: issue
number: 1
@attributes:
type: artNo
number: 012022
location:
url: http://ltu.diva-portal.org/smash/get/diva2:1382924/FULLTEXT01.pdf
accessCondition: gratis
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form: electronic
typeOfResource: text