REFORMULATION OF THE MOMENTUM THEORY APPLIED TO WIND TURBINES

The aim of this paper is to propose modifications to the Dyment formulation of the momentum theory applied to wind turbines. Although the hypotheses established by Dyment in order to modify the classical Betz wind turbine theory are considered valid, an alternative model is proposed to represent the streamtube that flows through the actuator disc and defines the turbine wake contour. In the present model a source is added to include the effects of a divergent streamtube, whose geometry is defined by the intensity of the source and its position with respect to the disc that simulates the horizontal-axis wind turbine. As an example, for a given position of the rotor disc relative to the source, the characteristic coefficients of the turbine and the geometry of the bounding streamtube, are obtained for the maximum output power condition. These results are compared with those obtained from the Betz and Dyment models.

  • Supplemental Notes:
    • J Wind Engng and Industrial Aerodynamics, v 58, Dec 1995, p 277 [16 p, 8 ref, 1 tab, 9 fig]
  • Authors:
    • Prado, R A
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00727543
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 1 1996 12:00AM