Ece Sagol, Marcelo Reggio and Adrian Ilinca
Article (2012)
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Open Access to the full text of this document Published Version Terms of Use: Creative Commons Attribution Download (2MB) |
Abstract
The very first step in the simulation of ice accretion on a wind turbine blade is the accurate prediction of the flow field around it and the performance of the turbine rotor. The paper addresses this prediction using RANS equations with a proper turbulence model. The numerical computation is performed using a commercial CFD code, and the results are validated using experimental data for the 3D flow field around the NREL Phase VI HAWT rotor. For the flow simulation, a rotating reference frame method, which calculates the flow properties as time-averaged quantities, has been used to reduce the time spent on the analysis. A basic grid convergence study is carried out to select the adequate mesh size. The two-equation turbulence models available in ANSYS FLUENT are compared for a 7 m/s wind speed, and the one that best represents the flow features is then used to determine moments on the turbine rotor at five wind speeds (7 m/s, 10 m/s, 15 m/s, 20 m/s, and 25 m/s). The results are validated against experimental data, in terms of shaft torque, bending moment, and pressure coefficients at certain spanwise locations. Streamlines over the cross-sectional airfoils have also been provided for the stall speed to illustrate the separation locations. In general, results have shown good agreement with the experimental data for prestall speeds.
Subjects: | 2100 Mechanical engineering > 2100 Mechanical engineering |
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Department: | Department of Mechanical Engineering |
Funders: | WesNET |
PolyPublie URL: | https://publications.polymtl.ca/14680/ |
Journal Title: | International Scholarly Research Notices (vol. 2012, no. 1) |
Publisher: | Wiley |
DOI: | 10.5402/2012/428671 |
Official URL: | https://doi.org/10.5402/2012/428671 |
Date Deposited: | 18 Apr 2023 15:11 |
Last Modified: | 14 Oct 2024 02:25 |
Cite in APA 7: | Sagol, E., Reggio, M., & Ilinca, A. (2012). Assessment of two-equation turbulence models and validation of the performance characteristics of an experimental wind turbine by CFD. International Scholarly Research Notices, 2012(1), 428671 (10 pages). https://doi.org/10.5402/2012/428671 |
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