Numerical study of the effect of tip-speed ratio on hydrokinetic turbine wake recovery

Autor:	Timothy O'Doherty, David S. Thompson, Shanti Bhushan, Joshua Bowman, Oumnia El Fajri
Rok vydání:	2022
Předmět:	Tip-speed ratio Renewable Energy Sustainability and the Environment Turbulence Range (aeronautics) Environmental science Detached eddy simulation Mechanics Wake Reynolds-averaged Navier–Stokes equations Turbine Large eddy simulation
Zdroj:	Renewable Energy. 182:725-750
ISSN:	0960-1481
DOI:	10.1016/j.renene.2021.10.030
Popis:	The predictive capabilities of blade-resolved unsteady Reynolds averaged Navier-Stokes (URANS) and detached eddy simulation (DES), the most commonly used hybrid RANS/large eddy simulation (LES) model, are assessed for hydrokinetic turbine performance and mean and turbulent flows in the intermediate-wake region, and results for a range of tip-speed ratio encompassing design and off-design conditions are analyzed to understand the wake recovery mechanism. The performance predictions compared within 5% of the experimental data. Both URANS and DES models performed reasonably well for the near wake predictions, where the errors were
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9a1c3eb0f228026ab2b2d9c89e31a05b https://doi.org/10.1016/j.renene.2021.10.030 Zobrazit plný text záznamu Full Text from ScienceDirect