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Final results of the EU JOULE projects "dynamic inflow"
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ECN 1995
ECN publicatienummer: Publicatie type:
ECN-RX--95-062 Overig
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Within the European Union JOULE 1 and JOULE 2 programs, two jointresearch projects were carried out concerning dynamic inflow effects. These effects describe the wake induced unsteadiness and non-uniformity of the flow in the rotor-plane. Aim of the project was the definition and implementation of engineering models within the current state-of-the-art computer codes for dynamic load calculations. These models have been qualified by means of comparison with both existing sophisticated models (dynamic vortex wake calculations) and experiments on turbines with a large range of rotor diameters. Important dynamic inflow effects were found at fast pitching transients and at yawed flow conditions. The effects were predicted well with the newly developed engineering methods. 12 figs., 3 refs.

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