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

Creation Information

Chung, S.Y. September 1, 1978.

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Description

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.

Physical Description

Pages: 103

Notes

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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 1, 1978

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

Description Last Updated

  • 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 April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.