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Optimization of the energy harvesting from airfoil stall induced oscillations

Grant number: 17/09468-6
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): August 01, 2017
Effective date (End): June 30, 2021
Field of knowledge:Engineering - Aerospace Engineering - Aerospace Structures
Principal Investigator:Flávio Donizeti Marques
Grantee:Carlos Renan dos Santos
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):18/05247-8 - Theoretical investigation of unsteady nonlinear aerodynamics, BE.EP.DD


Stall induced limit cycle oscillations were observed experimentally and modeled by several researchers in the last decades. However, there are not enough works on the versatility of this phenomenon applied to the conversion of flow energy to electrical energy in a optimized approach. Given this fact, the present work proposes an analysis based on the choice of structural and aerodynamic parameters, which optimize an energy harvester based on, stall induced oscillations. Computational analysis will be performed with the aeroelastic model developed during Master's degree period (FAPESP process 2016/24522-4). The model considers an aeroelastic typical section with two degrees of freedom and unsteady aerodynamic loading given by the Beddoes-Leishman dynamic stall model in state space representation. An electrical generator is going to be associated to pitching motion and the governing equations are coupled to the aeroelastic model. Moreover, experiments will be carry out to validate the computational model and investigate if the optimal conditions to energy harvesting efficiency predicted by the simulations are attained experimentally. This project will result in the parameter characterization and tests of optimized stall induced oscillations energy harvesters by considering their efficiencies at different flow speeds. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS SANTOS, CARLOS R.; MARQUES, FLAVIO D.; HAJJ, MUHAMMAD R.. The effects of structural and aerodynamic nonlinearities on the energy harvesting from airfoil stall-induced oscillations. JOURNAL OF VIBRATION AND CONTROL, v. 25, n. 14, p. 1991-2007, . (17/02926-9, 17/09468-6)
DOS SANTOS, CARLOS R.; DA SILVA, MAIRA M.; MARQUES, FLAVIO D.. Optimization of Energy Harvesting From Stall-Induced Oscillations Using the Multidimensional Kriging Metamodel. Journal of Computational and Nonlinear Dynamics, v. 14, n. 7, . (17/02926-9, 17/09468-6)
DOS SANTOS, C. R.; REZAEI, A. S.; TAHA, H. E.. iscous extension of vortex methods for unsteady aerodynamic. Physics of Fluids, v. 33, n. 10, . (18/05247-8, 17/09468-6)
DOS SANTOS, CARLOS R.; PACHECO, DOUGLAS R. Q.; TAHA, HAITHEM E.; ZAKARIA, MOHAMED Y.. Nonlinear modeling of electro-aeroelastic dynamics of composite beams with piezoelectric coupling. COMPOSITE STRUCTURES, v. 255, . (17/09468-6, 18/05247-8)

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