Filtered Lifting Theory and Application to Wind Turbine Blades

ORAL

Abstract

We present a new formulation of the filtered lifting line theory that can be applied to wings with significant changes in chord along the span, such as wind turbine blades. The new formulation can be used as a correction in large-eddy simulations of wind turbine blades using the actuator line model. The correction provides accurate blade loading when using coarse resolutions. We show how the solutions of coarse simulations with the correction match the results from fine resolutions with an optimal actuator line model. The filtered lifting line theory correction can significantly lower the computational expense of large-eddy simulations with an actuator line while providing accurate loading along the blades.

*This work was authored in part by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy O ce of Energy E ciency and Renewable Energy Wind Energy Technologies O ce. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allowothers to do so, for U.S. Government purposes.

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Publication: "Generalized Filtered Lifting Line Theory for Arbitrary Chord Lengths and Application to Wind Turbine Blades." Martinez Tossas, et al., Under Review, 2023

Presenters

  • Luis A Martinez

    • National Renewable Energy Laboratory

Authors

  • Luis A Martinez

    • National Renewable Energy Laboratory