Control of Aerodynamic Characteristics of Thick Airfoils at Low Reynolds Numbers Using Methods of Boundary Layer Control

Author:

Bulat Pavel1ORCID,Chernyshov Pavel1ORCID,Prodan Nikolay1,Volkov Konstantin2

Affiliation:

1. Scientific Research Laboratory of Flight Dynamics and Control of Unmanned Aircraft Systems, Sevastopol State University, 299053 Sevastopol, Russia

2. Faculty of Aerospace Engineering, Baltic State Technical University, 190005 St. Petersburg, Russia

Abstract

The article explores flow behavior around thick airfoils at low Reynolds numbers and the potential application of energy methods to manipulate the flow field for increased lift and reduced drag. The study relies on a set of propulsion airfoils calculated using a combined approach of solving the inverse problem of aerodynamics and applying stochastic global optimization methods. The calculations consider the transition from laminar to turbulent flow regimes, which significantly affects lift and airfoil drag. The suitability of different turbulence models for airfoil modeling in low Reynolds numbers is discussed, and numerical simulation results determine the lift coefficient dependence on angle of attack and the optimal air flow rate taken from the airfoil surface for each angle of attack. The accuracy of different turbulence models is analyzed by comparing numerical simulation results to physical experiment data.

Funder

Ministry of Science and Higher Education of Russian Federation

Publisher

MDPI AG

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