Optimal design of protuberant blades for small variable-speed horizontal axis wind turbine-experiments and simulations

Chang Chi Huang, Chi Jeng Bai, Yui-Chuin Shiah, Yu Jen Chen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In our previous study, it has been shown that the use of protuberances covering the whole leading edges of B-blades will enhance the performance of horizontal axis wind turbine (HAWT) under low speed rotations. However, a great loss of performance shall occur after a critical tip speed ratio is reached. The research aims to optimize the protuberance design of HAWT blades for the system to gain optimal performance under low speed rotations, whereas no significant drop of performance happens at high tip speed ratios. The optimization study was performed not only for baseline blades but also for those designed by the blade element momentum theory. For verifications, wind tunnel experiments were carried out to provide comparative data; additionally, numerical simulations were also conducted to further visualize the flow fields. The results show that the optimal leading-edge protuberances would significantly increase the HAWT performance under low speed rotations, yet no serious performance payback occurs at high tip speed ratios.

Original languageEnglish
Pages (from-to)1156-1167
Number of pages12
JournalEnergy
Volume115
DOIs
Publication statusPublished - 2016 Nov 15

Fingerprint

Wind turbines
Turbomachine blades
Experiments
Wind tunnels
Optimal design
Flow fields
Momentum
Computer simulation

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

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abstract = "In our previous study, it has been shown that the use of protuberances covering the whole leading edges of B-blades will enhance the performance of horizontal axis wind turbine (HAWT) under low speed rotations. However, a great loss of performance shall occur after a critical tip speed ratio is reached. The research aims to optimize the protuberance design of HAWT blades for the system to gain optimal performance under low speed rotations, whereas no significant drop of performance happens at high tip speed ratios. The optimization study was performed not only for baseline blades but also for those designed by the blade element momentum theory. For verifications, wind tunnel experiments were carried out to provide comparative data; additionally, numerical simulations were also conducted to further visualize the flow fields. The results show that the optimal leading-edge protuberances would significantly increase the HAWT performance under low speed rotations, yet no serious performance payback occurs at high tip speed ratios.",
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Optimal design of protuberant blades for small variable-speed horizontal axis wind turbine-experiments and simulations. / Huang, Chang Chi; Bai, Chi Jeng; Shiah, Yui-Chuin; Chen, Yu Jen.

In: Energy, Vol. 115, 15.11.2016, p. 1156-1167.

Research output: Contribution to journalArticle

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AU - Shiah, Yui-Chuin

AU - Chen, Yu Jen

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