Study of tip loss corrections using CFD rotor computations

Wen Zhong Shen; Wei Jun Zhu; Jens Nørkær Sørensen

doi:10.1088/1742-6596/555/1/012094

Study of tip loss corrections using CFD rotor computations

Wen Zhong Shen, Wei Jun Zhu, Jens Nørkær Sørensen

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Abstract

Tip loss correction is known to play an important role for engineering prediction of wind turbine performance. There are two different types of tip loss corrections: tip corrections on momentum theory and tip corrections on airfoil data. In this paper, we study the latter using detailed CFD computations for wind turbines with sharp tip. Using the technique of determination of angle of attack and the CFD results for a NordTank 500 kW rotor, airfoil data are extracted and a new tip loss function on airfoil data is derived. To validate, BEM computations with the new tip loss function are carried out and compared with CFD results for the NordTank 500 kW turbine and the NREL 5 MW turbine. Comparisons show that BEM with the new tip loss function can predict correctly the loading near the blade tip.

Original language	English
Article number	012094
Book series	Journal of Physics: Conference Series (Online)
Volume	555
Number of pages	9
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/555/1/012094
Publication status	Published - 2014
Event	The science of Making Torque from Wind 2012: 4th scientific conference - Universität Oldenburg, Oldenburg, Germany Duration: 9 Oct 2012 → 11 Oct 2012 http://www.forwind.de/makingtorque/Home.html

Conference

Conference	The science of Making Torque from Wind 2012
Location	Universität Oldenburg
Country/Territory	Germany
City	Oldenburg
Period	09/10/2012 → 11/10/2012
Internet address	http://www.forwind.de/makingtorque/Home.html

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Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd

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title = "Study of tip loss corrections using CFD rotor computations",

abstract = "Tip loss correction is known to play an important role for engineering prediction of wind turbine performance. There are two different types of tip loss corrections: tip corrections on momentum theory and tip corrections on airfoil data. In this paper, we study the latter using detailed CFD computations for wind turbines with sharp tip. Using the technique of determination of angle of attack and the CFD results for a NordTank 500 kW rotor, airfoil data are extracted and a new tip loss function on airfoil data is derived. To validate, BEM computations with the new tip loss function are carried out and compared with CFD results for the NordTank 500 kW turbine and the NREL 5 MW turbine. Comparisons show that BEM with the new tip loss function can predict correctly the loading near the blade tip.",

author = "Shen, {Wen Zhong} and Zhu, {Wei Jun} and S{\o}rensen, {Jens N{\o}rk{\ae}r}",

note = "Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd; The science of Making Torque from Wind 2012 : 4th scientific conference ; Conference date: 09-10-2012 Through 11-10-2012",

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AU - Shen, Wen Zhong

AU - Zhu, Wei Jun

AU - Sørensen, Jens Nørkær

N1 - Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd

PY - 2014

Y1 - 2014

N2 - Tip loss correction is known to play an important role for engineering prediction of wind turbine performance. There are two different types of tip loss corrections: tip corrections on momentum theory and tip corrections on airfoil data. In this paper, we study the latter using detailed CFD computations for wind turbines with sharp tip. Using the technique of determination of angle of attack and the CFD results for a NordTank 500 kW rotor, airfoil data are extracted and a new tip loss function on airfoil data is derived. To validate, BEM computations with the new tip loss function are carried out and compared with CFD results for the NordTank 500 kW turbine and the NREL 5 MW turbine. Comparisons show that BEM with the new tip loss function can predict correctly the loading near the blade tip.

AB - Tip loss correction is known to play an important role for engineering prediction of wind turbine performance. There are two different types of tip loss corrections: tip corrections on momentum theory and tip corrections on airfoil data. In this paper, we study the latter using detailed CFD computations for wind turbines with sharp tip. Using the technique of determination of angle of attack and the CFD results for a NordTank 500 kW rotor, airfoil data are extracted and a new tip loss function on airfoil data is derived. To validate, BEM computations with the new tip loss function are carried out and compared with CFD results for the NordTank 500 kW turbine and the NREL 5 MW turbine. Comparisons show that BEM with the new tip loss function can predict correctly the loading near the blade tip.

U2 - 10.1088/1742-6596/555/1/012094

DO - 10.1088/1742-6596/555/1/012094

M3 - Conference article

SN - 1742-6596

VL - 555

JO - Journal of Physics: Conference Series (Online)

JF - Journal of Physics: Conference Series (Online)

M1 - 012094

T2 - The science of Making Torque from Wind 2012

Y2 - 9 October 2012 through 11 October 2012

ER -

Study of tip loss corrections using CFD rotor computations

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