Wind energy conversion. Volume IX. Aerodynamics of wind turbine with tower disturbances

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Lifting line theory which is the counterpart of Prandtl's lifting line theory for rotating wing is employed for the overall performance analysis of a horizontal axis wind turbine rotor operating in a uniform flow. The wake system is modeled by non-rigid wake which includes the radial expansion and the axial retardation of trailing vortices. For the non-uniform flow which are caused by the ground, the tower reflection, or the tower shadow, the unsteady airloads acting on the turbine blade are computed, using lifting line theory and a non-rigid wake model. An equation which gives the wind profile in the tower ... continued below

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Pages: 103

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Chung, S.Y. September 1, 1978.

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Lifting line theory which is the counterpart of Prandtl's lifting line theory for rotating wing is employed for the overall performance analysis of a horizontal axis wind turbine rotor operating in a uniform flow. The wake system is modeled by non-rigid wake which includes the radial expansion and the axial retardation of trailing vortices. For the non-uniform flow which are caused by the ground, the tower reflection, or the tower shadow, the unsteady airloads acting on the turbine blade are computed, using lifting line theory and a non-rigid wake model. An equation which gives the wind profile in the tower shadow region is developed. Also, the equations to determine pitch angle control are derived to minimize the flapping moment variations or the thrust variations due to the non-uniform flow over a rotation.

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Pages: 103

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Dep. NTIS, PC A06/MF A01.

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  • Report No.: COO-4131-T1(Vol.9)
  • Grant Number: EY-76-S-02-4131
  • DOI: 10.2172/5477179 | External Link
  • Office of Scientific & Technical Information Report Number: 5477179
  • Archival Resource Key: ark:/67531/metadc1092513

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 1, 1978

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  • Feb. 10, 2018, 10:06 p.m.

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  • March 27, 2018, 6:32 p.m.

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Chung, S.Y. Wind energy conversion. Volume IX. Aerodynamics of wind turbine with tower disturbances, report, September 1, 1978; United States. (digital.library.unt.edu/ark:/67531/metadc1092513/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.