Simulating Atmospheric Boundary Layer Turbulence with Nek5000/RS

Technical Report · Fri Sep 30 04:00:00 EDT 2022

DOI:https://doi.org/10.2172/1891130· OSTI ID:1891130

Min, Misun ^[1]; Tombouldies, Ananias ^[2]

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1. Argonne National Lab. (ANL), Argonne, IL (United States)
2. Aristotle Univ. of Thessaloniki (Greece)

We present large-eddy-simulation (LES) modeling approaches for the simulation of atmospheric boundary layer turbulence that are of direct relevance to wind energy production. In this report, we study a GABLS benchmark problem using high-order spectral element code Nek5000/RS, which is supported under the DOE’s Exascale Computing Project (ECP) Center for Efficient Exascale Discretizations (CEED) project, targeting application simulations on various acceleration-device based exascale computing platforms [1, 2]. We demonstrate our newly developed subgrid-scale (SGS) models based on high-pass filter (HPF), mean-field eddy viscosity (MFEV), and Smagorinsky (SMG) with no-slip and traction boundary conditions, provided with low-order statistics, convergence and turbulent structure analysis. The model fidelity and scaling performance of Nek5000/RS on DOE’s leadership computing platforms in comparison to those of AMR-Wind, a block-structured second-order finite-volume code with adaptive-mesh-refinement capabilities, are discussed in [3].

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Exascale Computing Project (ECP); USDOE Office of Science (SC)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1891130
• Report Number(s): ANL-22/79; 179031
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
97 MATHEMATICS AND COMPUTING