Generalized Filtered Lifting Line Theory for Arbitrary Chord Lengths and Application to Wind Turbine Blades

Luis Martinez-Tossas, Philip Sakievich, Matthew Churchfield, Charles Meneveau

Research output: Contribution to journalArticlepeer-review

Abstract

The filtered lifting line theory is an analytical approach used to solve the equations of flow subjected to body forces with a Gaussian distribution, such as used in the actuator line model. In the original formulation, the changes in chord length along the blade were assumed to be small. This assumption can lead to errors in the induced velocities predicted by the theory compared to full solutions of the equations. In this work, we revisit the original derivation and provide a more general formulation that can account for significant changes in chord along the blade. The revised formulation can be applied to wings with significant changes in chord along the span, such as wind turbine blades.
Original languageAmerican English
Pages (from-to)101-106
Number of pages6
JournalWind Energy
Volume27
Issue number1
DOIs
StatePublished - 2024

NREL Publication Number

  • NREL/JA-5000-85343

Keywords

  • actuator line model
  • aerodynamics
  • filtered lifting line theory
  • lifting line

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