Aerodynamic Performance Prediction of Straight-Bladed Vertical Axis Wind Turbine Based on CFD

Numerical simulation had become an attractive method to carry out research on structural design and aerodynamic performance prediction of straight-bladed vertical axis wind turbine, while the prediction accuracy was the major concern of computational fluid dynamics (CFD). Based on the present two-dimensional CFD model, a series of systematic investigations was conducted to analyze the effects of computational domain, grid number, near-wall grid, and time step on prediction accuracy. Efforts were devoted to prediction and analysis of the overall flow field, dynamic performance of blades, and its aerodynamic forces. The calculated results agree well with experimental data, and it demonstrates that the turbulent model is great to predict the tendency of aerodynamic forces but with a high estimate value of turbulence viscosity coefficient. Furthermore, the calculated tangential force is more dependent on near-wall grid and prediction accuracy is poor within the region with serious dynamic stall. In addition, blades experience mild and deep stalls at low tip speed ratio, and thus the leading edge separation vortex and its movement on the airfoil surface have a significant impact on the aerodynamic performance.

• Record URL:
  https://doi.org/10.1155/2013/905379
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/16878132
• Supplemental Notes:
  • © 2013 L X Zhang et al.
• Authors:
  • Zhang, L X
  • Liang, Y B
  • Liu, X H
  • Jiao, Q F
  • Guo, Jianhua
• Publication Date: 2013

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: 11p
• Serial:
  • Advances in Mechanical Engineering
  • Volume: 2013
  • Issue Number: Article ID 905379
  • Publisher: Sage Publications, Incorporated
  • ISSN: 1687-8132
  • EISSN: 1687-8140
  • Serial URL: https://journals.sagepub.com/home/ade
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Aerodynamics; Blades (Machinery); Fluid dynamics; Mathematical prediction; Performance; Simulation; Structural design; Turbines; Wind power generation
• Subject Areas: Energy; Transportation (General); Vehicles and Equipment; I15: Environment;

Filing Info

• Accession Number: 01483641
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 12 2013 9:54AM