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Improved formulation for a semi-analytical model for separated flow over an unsteady airfoil

Grant number: 19/04366-6
Support Opportunities:Scholarships abroad - Research Internship - Scientific Initiation
Effective date (Start): July 01, 2019
Effective date (End): July 31, 2019
Field of knowledge:Engineering - Aerospace Engineering - Aerodynamics
Principal Investigator:Flávio Donizeti Marques
Grantee:George Lucas Souto Torres
Supervisor: Haithem Ezzat Mohammed Taha
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Research place: University of California, Irvine (UC Irvine), United States  
Associated to the scholarship:18/23293-7 - Analytical and computational modeling of unsteady flow over an airfoil at high angles of attack, BP.IC


The present research project proposes the improvement of a semi-analytical inviscid model for two-dimensional separated flow over an unsteady airfoil. The potential theory, the Kutta condition and the Joukowsky transformation between a circle and the plate cross-section were used, being analyzed the kinematic and dynamic characteristics of the flow for high angles of attack. This work complements the development of an analytical model in the original process (FAPESP process 2018/23293-7 - scientific initiation grant) used to explain the behavior of the vortices generated behind an inclined two-dimensional flat plate. The results will help to better understand its application in unsteady aerodynamics for cases involving high angles of attack, such as the dynamic stall. (AU)

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