The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake

Keita Kimura; Yasutada Tanabe; Takashi Aoyama; Yuichi Matsuo; Makoto Iida

doi:10.1007/978-3-030-22196-6_51

The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake

Keita Kimura, Yasutada Tanabe, Takashi Aoyama, Yuichi Matsuo, Makoto Iida

Department of Information and Computer Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The rapid recovery of a velocity deficit in a wind turbine wake was studied using unsteady simulations of Navier-Stokes equations. The results indicate that as the tip speed ratio (TSR) increased, the velocity deficit in the far-wake region was reduced while the deficit in the near-wake increased. This was caused in part by the difference of tip vortex behaviors; as the TSR increases, the distance between vortices narrows. This narrow interval can accelerate the pairing of vortex sheets, producing larger structures and accelerating the recovery of the velocity deficit.

Original language	English
Title of host publication	Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018
Editors	Ramis Örlü, Alessandro Talamelli, Joachim Peinke, Martin Oberlack
Publisher	Springer Science and Business Media, LLC
Pages	323-329
Number of pages	7
ISBN (Print)	9783030221959
DOIs	https://doi.org/10.1007/978-3-030-22196-6_51
Publication status	Published - 2019
Event	8th iTi Conference on Turbulence, 2018 - Bertinoro, Italy Duration: 3 Sep 2018 → 7 Sep 2018

Publication series

Name	Springer Proceedings in Physics
Volume	226
ISSN (Print)	0930-8989
ISSN (Electronic)	1867-4941

Conference

Conference	8th iTi Conference on Turbulence, 2018
Country	Italy
City	Bertinoro
Period	3/09/18 → 7/09/18

Access to Document

10.1007/978-3-030-22196-6_51

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Kimura, K., Tanabe, Y., Aoyama, T., Matsuo, Y., & Iida, M. (2019). The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake. In R. Örlü, A. Talamelli, J. Peinke, & M. Oberlack (Eds.), Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018 (pp. 323-329). (Springer Proceedings in Physics; Vol. 226). Springer Science and Business Media, LLC. https://doi.org/10.1007/978-3-030-22196-6_51

Kimura, Keita ; Tanabe, Yasutada ; Aoyama, Takashi ; Matsuo, Yuichi ; Iida, Makoto. / The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake. Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. editor / Ramis Örlü ; Alessandro Talamelli ; Joachim Peinke ; Martin Oberlack. Springer Science and Business Media, LLC, 2019. pp. 323-329 (Springer Proceedings in Physics).

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title = "The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake",

abstract = "The rapid recovery of a velocity deficit in a wind turbine wake was studied using unsteady simulations of Navier-Stokes equations. The results indicate that as the tip speed ratio (TSR) increased, the velocity deficit in the far-wake region was reduced while the deficit in the near-wake increased. This was caused in part by the difference of tip vortex behaviors; as the TSR increases, the distance between vortices narrows. This narrow interval can accelerate the pairing of vortex sheets, producing larger structures and accelerating the recovery of the velocity deficit.",

author = "Keita Kimura and Yasutada Tanabe and Takashi Aoyama and Yuichi Matsuo and Makoto Iida",

year = "2019",

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booktitle = "Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018",

note = "8th iTi Conference on Turbulence, 2018 ; Conference date: 03-09-2018 Through 07-09-2018",

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Kimura, K, Tanabe, Y, Aoyama, T, Matsuo, Y & Iida, M 2019, The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake. in R Örlü, A Talamelli, J Peinke & M Oberlack (eds), Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. Springer Proceedings in Physics, vol. 226, Springer Science and Business Media, LLC, pp. 323-329, 8th iTi Conference on Turbulence, 2018, Bertinoro, Italy, 3/09/18. https://doi.org/10.1007/978-3-030-22196-6_51

The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake. / Kimura, Keita; Tanabe, Yasutada; Aoyama, Takashi; Matsuo, Yuichi; Iida, Makoto.

Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. ed. / Ramis Örlü; Alessandro Talamelli; Joachim Peinke; Martin Oberlack. Springer Science and Business Media, LLC, 2019. p. 323-329 (Springer Proceedings in Physics; Vol. 226).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - The rapid recovery of a velocity deficit in a wind turbine wake was studied using unsteady simulations of Navier-Stokes equations. The results indicate that as the tip speed ratio (TSR) increased, the velocity deficit in the far-wake region was reduced while the deficit in the near-wake increased. This was caused in part by the difference of tip vortex behaviors; as the TSR increases, the distance between vortices narrows. This narrow interval can accelerate the pairing of vortex sheets, producing larger structures and accelerating the recovery of the velocity deficit.

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Kimura K, Tanabe Y, Aoyama T, Matsuo Y, Iida M. The relationship between vortex pairings and velocity deficit recovery in a wind turbine wake. In Örlü R, Talamelli A, Peinke J, Oberlack M, editors, Progress in Turbulence VIII - Proceedings of the iTi Conference in Turbulence 2018. Springer Science and Business Media, LLC. 2019. p. 323-329. (Springer Proceedings in Physics). https://doi.org/10.1007/978-3-030-22196-6_51