The Development of a Prescribed Wake Model for the Prediction of the Aerodynamic Performance of Horizontal Axis Wind Turbines in Steady Axial Flow. Departmental report no. 9403

Robison, D.J., Coton, F.N., Galbraith, R.A.M. and Vezza, M. (1994) The Development of a Prescribed Wake Model for the Prediction of the Aerodynamic Performance of Horizontal Axis Wind Turbines in Steady Axial Flow. Departmental report no. 9403. Technical Report. Department of Aerospace Engineering, University of Glasgow.

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Abstract

Summary: The development of phase one of a new model for the prediction of the aerodynamic performance of horizontal axis wind turbines is described in the following report. At present the model is configured for performance prediction under steady axial flow conditions. Geometry prescription techniques, based on conservation of momentum, are employed to determine the shape of the turbine wake. This wake is modelled as a series of vortex filaments which, via the Biot-Savart relationship, allows the loadings on the turbine to be evaluated. As is the case with free wake models, a closed form solution is excluded due to the nature of the problem and iterative procedures are, therefore, used to obtain a good prediction. As well as a detailed description of the model, it’s structure and the numerical procedures employed are described. The results obtained from the scheme are satisfactory at this stage of development but further validation is required. The work described in this report is intended to act as the basis for the development of a more comprehensive prescribed wake model, which should yield results of similar accuracy to firee wake calculations while requiring only a fraction of the computational effort

Item Type:Research Reports or Papers (Technical Report)
Status:Published
Glasgow Author(s) Enlighten ID:Coton, Professor Frank and Galbraith, Professor Roderick and Vezza, Dr Marco
Authors: Robison, D.J., Coton, F.N., Galbraith, R.A.M., and Vezza, M.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Publisher:Department of Aerospace Engineering, University of Glasgow
Copyright Holders:Copyright © 1994 Department of Aerospace Engineering, University of Glasgow
Publisher Policy:Reproduced with the permission of the Department

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