Analysis of dynamic stall for a simplified single blade vertical axis wind turbine configuration

Author(s)

Feitosa, Lucas ; Miotto, Renato ; Wolf, William

• Document type: Journal article
• Source: AIAA AVIATION FORUM AND ASCEND 2024; v. N/A, p. 10-pg., 2024-01-01.

Abstract

The dynamic stall features of a simplified vertical axis wind turbine (VAWT) configuration are analyzed. Wall-resolved large eddy simulations (LES) are performed for a NACA0018 airfoil operating as a single blade VAWT, and the operational parameters are set to tip speed ratio lambda = 3, Reynolds number Re = 50, 000 and Mach number M = 0.1. The numerical model is validated by performing a grid convergence study as well as an analysis of the airfoil spanwise domain. Results suggest that a computational domain with 40% of the airfoil chord in the spanwise direction is sufficient to capture the underlying flow dynamics when compared with span lengths of 10% and 80% of the chord. A good agreement with literature results is observed in terms of the main flow features for similar setups both in terms of integral quantities and the overall flow behavior. (AU)

• FAPESP's process: 22/08567-9 - Numerical investigation of an airfoil under light dynamic stall
• Grantee: Lucas Feitosa de Souza
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry
• Grantee: Francisco Louzada Neto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 13/08293-7 - CCES - Center for Computational Engineering and Sciences
• Grantee: Munir Salomao Skaf
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 22/09196-4 - Improving the understanding of unsteady aerodynamic flows via high-fidelity simulations, analytical modeling and deep learning techniques
• Grantee: Renato Fuzaro Miotto
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 21/06448-0 - High-fidelity numerical simulations applied in unsteady aerodynamics, turbulence and aeroacoustics
• Grantee: William Roberto Wolf
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2