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An aerodynamic method for the analysis of isolated horizontal-axis wind turbines

Christian Masson, Idriss Ammara, Ion Paraschivoiu

Article (1997)

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Abstract

The aerodynamic analysis of a wind turbine represents a very complex task since it involves an unsteady three-dimensional viscous flow. In most existing performance-analysis methods, wind turbines are considered isolated so that interference effects caused by other rotors or bythe site topology are neglected. Studying these effects in order to optimize the arrangement and the positioning of Horizontal-Axis Wind Turbines (HAWTs) on a wind farm is one of the research activities of the Bombardier Aeronautical Chair. As a preliminary step in theprogress of this project, a method that includes some of the essential ingredients for the analysis of wind farms has been developed and is presented in the paper. In this proposed method, the flow field around isolated HAWTs is predicted by solving the steady-state, incompressible, two-dimensional axisymmetric Navier- stokes equations. The turbine is represented by a distribution of momentum sources. The resulting governing equations are solved using a Control-Volume Finite Element Method (CVFEM). This axisymmetric implementation efficiently illustrates the applicability and viability of the proposed methodology, by using a formulation that necessitates a minimum of computer resources. The axisymmetric method produces performance predictions for isolated machines with the same level of accuracy than the well-known momentum-strip theory. It can therefore be consideredto be a useful tool for the design of HAWTs. Its main advantage, however, is its capacity to predict the flow in the wake which constitutes one of the essential features needed for the performance predictions of wind farms of dense cluster arrangements.

Uncontrolled Keywords

Wind Farm, Wind Power, HAWT, Numerical Method, Navier-Stokes Equations

Subjects: 2100 Mechanical engineering > 2100 Mechanical engineering
2100 Mechanical engineering > 2108 Aerospace, aeronautical and automotive engineering
Department: Department of Mechanical Engineering
Funders: Ministre de l"Inergie et des Ressources du Québec - Programme d’aide au développement des technologies de l’énergie
PolyPublie URL: https://publications.polymtl.ca/3667/
Journal Title: International Journal of Rotating Machinery (vol. 3, no. 1)
Publisher: Hindawi
DOI: 10.1155/s1023621x97000031
Official URL: https://doi.org/10.1155/s1023621x97000031
Date Deposited: 20 Sep 2019 12:06
Last Modified: 11 Nov 2022 13:50
Cite in APA 7: Masson, C., Ammara, I., & Paraschivoiu, I. (1997). An aerodynamic method for the analysis of isolated horizontal-axis wind turbines. International Journal of Rotating Machinery, 3(1), 21-32. https://doi.org/10.1155/s1023621x97000031

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