Sliding mesh simulations of a wind turbine rotor with actuator line lattice-Boltzmann method

André F.P. Ribeiro*, Claudia Muscari

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Simulating entire wind farms with an actuator line model requires significant computational effort, especially if one is interested in wake dynamics and wants to resolve the tip vortices. A need to explore unconventional approaches for this kind of simulation emerges. In this work, the actuator line method is implemented within a lattice-Boltzmann flow solver, combined with a sliding mesh approach. Lattice-Boltzmann solvers have advantages in terms of performance and low dissipation, while the sliding mesh allows for local refinement of the blade and tip vortices. This methodology is validated on a well-documented case, the NREL Phase VI rotor, and the local refinement is demonstrated on the NREL 5 MW rotor. Results show good agreement with reference Navier–Stokes simulations. Advantages and limitations of the sliding mesh approach are identified.

Original languageEnglish
Number of pages15
JournalWind Energy
DOIs
Publication statusPublished - 2023

Keywords

  • NREL 5 MW
  • NREL Phase VI
  • tip vortices
  • wake aerodynamics

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