Improvement of the accuracy of the blade element momentum theory method in wind turbine aerodynamics analysis

Terence Macquart*, Alireza Maheri, Krishna Busawon

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Blade element momentum theory (BEMT) is based on an iterative process in which the axial and rotational induction factors are determined within an iteration loop. In unsteady BEMT the effect of dynamic stall on the lift coefficient is taken into account. Normally, the effect of dynamic stall on the converged values for induction factors is neglected and correction to the lift coefficient is applied after obtaining induction factors, outside the iteration loop. In this paper it is shown that this can lead to inaccurate results. This paper also proposes a method for reducing the number of iterations significantly and therefore making the integration of dynamic stall inside the iteration loop efficient.

Original languageEnglish
Title of host publication2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012
Pages402-405
Number of pages4
DOIs
Publication statusPublished - 2012
Event2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012 - Newcastle upon Tyne, United Kingdom
Duration: 25 Jun 201227 Jun 2012

Conference

Conference2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012
CountryUnited Kingdom
CityNewcastle upon Tyne
Period25/06/1227/06/12

Keywords

  • BEMT
  • blade element momentum theory
  • dynamic stall
  • induction factor

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