Large-Eddy Simulations of Idealized Atmospheric Boundary Layers Using Nalu-Wind

Journal Article · Tue Mar 03 00:00:00 EST 2020 · Journal of Physics. Conference Series

DOI:https://doi.org/10.1088/1742-6596/1452/1/012078· OSTI ID:1659952

Kaul, C. M. ^[1]; Ananthan, Shreyas ^[2]; Churchfield, Matthew  ^[2]; Mirocha, J. D. ^[3]; Berg, L. K. ^[1]; Rai, R. ^[1]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Accurate prediction of wind-plant performance relies, in part, on properly characterizing the turbulent atmospheric boundary layer (ABL) flow in which wind turbines operate. Large-eddy simulation (LES) is a powerful tool for simulating ABLs because it resolves the largest, most energetic scales of three-dimensional turbulent motions. Yet LES predictions are well known to depend on modeling choices such as grid resolution, numerical discretization schemes, and closures for unresolved scales of turbulence. Here, we evaluate how these choices influence predictions of ABL winds using Nalu-Wind, a wind-specific fork of the open-source, generalized, unstructured, massively parallel flow solver NaluCFD/Nalu.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
• Grant/Contract Number: AC36-08GO28308
• OSTI ID: 1659952
• Report Number(s): NREL/JA-2C00-77162; MainId:26108; UUID:5dd5f351-2537-4852-b6a1-217a7eebc690; MainAdminID:13684
• Journal Information: Journal of Physics. Conference Series, Vol. 1452; ISSN 1742-6588
• Publisher: IOP Publishing
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
atmostpheric boundary layer
large-eddy simulation
Nalu-Wind
turbulence
wind plant performance
wind turbines