A level-set framework for the wind turbine wake analysis: from high-fidelity unsteady simulations to 1D momentum theory - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physics: Conference Series Année : 2021

A level-set framework for the wind turbine wake analysis: from high-fidelity unsteady simulations to 1D momentum theory

Résumé

In the context of yawed wind turbine wakes, the validity of the so-called 1D momentum theory is arguable. The 1D momentum theory emerges from an inviscid, steady and irrotational analysis of the streamtube surrounding a wind turbine while the wake aerodynamics under yaw is modified. In this work, the mean flow streamtube around a single DTU 10MW wind turbine, under yaw misalignement and turbulent inflow is investigated with Large-Eddy Simulation combined to the Actuator Line method. The simulations are performed on a highly resolved grid counting billions of elements. The streamtube construction from the mean flow is based on the transport of accurate conservative level set functions. Integration of local flow quantities within the streamtube presents similarities when the streamtube expansion occurs past the turbine until the velocity deficit starts to recover. Mean kinetic energy and momentum budget are then presented to explain the yawed wake recovery and deflection process. Background turbulence plays a key role in the recovery process while the deflection of the wake is impacted by pressure forces on the streamtube. From these budgets, four wake regions showing similar flow dynamics are defined and correlated to local flow structures.
Fichier principal
Vignette du fichier
Houtin—Mongrolle_2021_J._Phys.__Conf._Ser._1934_012011.pdf (6.24 Mo) Télécharger le fichier
WAKE2021_F_HoutinMongrolle_et_al.pdf (35.12 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03254788 , version 1 (26-07-2021)

Identifiants

Citer

Félix Houtin-Mongrolle, Pierre Bénard, Ghislain Lartigue, Vincent Moureau. A level-set framework for the wind turbine wake analysis: from high-fidelity unsteady simulations to 1D momentum theory. Journal of Physics: Conference Series, 2021, 1934 (1), pp.012011. ⟨10.1088/1742-6596/1934/1/012011⟩. ⟨hal-03254788⟩
116 Consultations
29 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More