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

Terence Macquart; Alireza Maheri; Krishna Busawon

doi:10.1109/EFEA.2012.6294047

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

Engineering

Northumbria University

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

7 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 language	English
Title of host publication	2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012
Pages	402-405
Number of pages	4
DOIs	https://doi.org/10.1109/EFEA.2012.6294047
Publication status	Published - 2012
Event	2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012 - Newcastle upon Tyne, United Kingdom Duration: 25 Jun 2012 → 27 Jun 2012

Conference

Conference	2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012
Country/Territory	United Kingdom
City	Newcastle upon Tyne
Period	25/06/12 → 27/06/12

Keywords

BEMT
blade element momentum theory
dynamic stall
induction factor

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Improvement of the accuracy of the blade element momentum theory method in wind turbine aerodynamics analysis. / Macquart, Terence; Maheri, Alireza; Busawon, Krishna.
2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012. 2012. p. 402-405 6294047.

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Macquart, T, Maheri, A & Busawon, K 2012, Improvement of the accuracy of the blade element momentum theory method in wind turbine aerodynamics analysis. in 2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012., 6294047, pp. 402-405, 2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012, Newcastle upon Tyne, United Kingdom, 25/06/12. https://doi.org/10.1109/EFEA.2012.6294047

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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.",

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AB - 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.

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KW - dynamic stall

KW - induction factor

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BT - 2nd International Symposium on Environment Friendly Energies and Applications, EFEA 2012

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Y2 - 25 June 2012 through 27 June 2012

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

Abstract

Conference

Keywords

UN SDGs

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