Full rotor modelling and generalized actuator disc for wind turbine wake investigation

Artikel

This paper purpose a numerical study of the flow downstream a wind turbine erected in the neutral atmospheric boundary layer. A first part consists of unsteady wind flow simulations through a full moving rotor, which lets identifying the vortex generated in the wind turbine wake. The governed equations were solved in two sub-domains (Rotor/Stator) and the moved fluid flow continuity at the domain interface was managed by the Sliding Mesh technique of Turbo-machinery implemented in an open-source 'Code _Saturne'. However, the unsteady full rotor calculations proved to be extensive and inadequate for optimizing the wind farm layout. Therefore, to achieve a more accessible wake model, the second part consists of the design of a generalized hybrid wake model in which, contrary to the full simulation, an actuator disc 'with non-zero thicknesses' has substituted the rotor and was coupled to the Reynolds averaged Navier Stokes equations (RANS) through additional source terms. The modified k- was used to model the turbulence developed downstream the rotor. The ability of the proposed model to represent the wake was demonstrated by a series of validations with experimental data and results were in good agreement.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Journal: Energy Reports ; ISSN: 2352-4847 ; Volume: 6 ; Year: 2020 ; Issue: 3 ; Pages: 232-255 ; Amsterdam: Elsevier

Classification and Topics

• Classification: Wirtschaft
• Subject: U-RANS ; Sliding Mesh ; Generalized actuator volume ; CFD

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Nedjari, H. Daaou ; Guerri, O. ; Saighi, M.
• Event: Veröffentlichung
• (who): Elsevier
• (where): Amsterdam
• (when): 2020

Further information

• DOI: doi:10.1016/j.egyr.2019.10.041
• Handle: http://hdl.handle.net/10419/243995
• Last update: 10.03.2025, 11:41 AM CET