NDLI: Turbulence Modeling for the Stable Atmospheric Boundary Layer and Implications for Wind Energy

Content Provider	Springer Nature Link
Author	Zhou, Bowen Chow, Fotini Katopodes
Copyright Year	2011
Abstract	The near-surface structure of atmospheric turbulence affects the design and operation of wind turbines and is especially difficult to predict under stably-stratified conditions. This study uses large-eddy simulation (LES) to explore properties of the stable boundary layer (SBL) using an explicit filtering and reconstruction turbulence modeling approach. Simulations of the atmospheric boundary layer over flat terrain, under both moderately and strongly stable conditions are performed. Results from high-resolution simulations are used to investigate SBL flow structures including mean profiles and turbulence statistics, which are relevant to wind energy applications. The applicability of power-law relations and empirical similarity formulations for predicting wind speed depend on the strength of stratification and are shown to be inadequate. Low-level jets form in the simulations. Under strong stability, vertical wind shear below the jet triggers intermittent turbulence. The associated sporadic “bursting” events are extremely energetic and last longer than the time scale of the largest eddies. Such phenomena can have adverse effects on turbine lifetime and performance.
Starting Page	255
Ending Page	277
Page Count	23
File Format	PDF
ISSN	13866184
Journal	Flow, Turbulence and Combustion
Volume Number	88
Issue Number	1-2
e-ISSN	15731987
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-07-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Large-eddy simulations Stable atmospheric boundary layer Wind energy Fluid- and Aerodynamics Automotive Engineering Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry Chemical Engineering

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