An extension of the Generalized Actuator Disc Theory for aerodynamic analysis of the diffuser-augmented wind turbines

研究成果: Contribution to journalArticle査読

40 被引用数 (Scopus)

抄録

The one-dimensional momentum theory is essential for understating the physical mechanism behind the phenomena of the DAWT (Diffuser-Augmented Wind Turbines). The present work tries to extend the existing GADT (Generalized Actuator Disc Theory) that proposed by Jamieson (2008). Firstly, the GADT is modified to include an effective diffuser efficiency, which is affected by the thrust loading or axial induction. Secondly, Glauert corrections to the DAWT system in the turbulent wake state are proposed, modelled by a linear and a quadratic approximation, respectively. Finally, for prediction of the axial velocity profile at rotor plane bearing various thrust loadings, an empirical model is established, which can be further used to predict the diffuser axial induction. In addition, the ‘cut-off point’ in Glauert correction and the ‘critical thrust loading’ in axial velocity profile prediction are newly defined to assist the analysis. All the above formulations have been compared and validated with Jamieson's results and Hansen's CFD data, justifying the effectiveness of the present model.

本文言語英語
ページ(範囲)1852-1859
ページ数8
ジャーナルEnergy
93
DOI
出版ステータス出版済み - 12 15 2015

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • モデリングとシミュレーション
  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • エネルギー工学および電力技術
  • 汚染
  • エネルギー(全般)
  • 機械工学
  • 産業および生産工学
  • 管理、モニタリング、政策と法律
  • 電子工学および電気工学

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