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Saber, M., Djavareshkian, M. (2022). Aerolastic Around Rough Airfoil During Turbulent Unsteady Transonic Flow. Electronic and Cyber Defense, 10(2), 19-34.
M.R. Saber; Mohammad Hassan Djavareshkian. "Aerolastic Around Rough Airfoil During Turbulent Unsteady Transonic Flow". Electronic and Cyber Defense, 10, 2, 2022, 19-34.
Saber, M., Djavareshkian, M. (2022). 'Aerolastic Around Rough Airfoil During Turbulent Unsteady Transonic Flow', Electronic and Cyber Defense, 10(2), pp. 19-34.
Saber, M., Djavareshkian, M. Aerolastic Around Rough Airfoil During Turbulent Unsteady Transonic Flow. Electronic and Cyber Defense, 2022; 10(2): 19-34.

Aerolastic Around Rough Airfoil During Turbulent Unsteady Transonic Flow

مکانیک سیالات و آیرودینامیک
Article 2, Volume 10, Issue 2 - Serial Number 28, February 2022, Pages 19-34    PDF (1.33 M)
Document Type: Original Article
Authors
M.R. Saber1; Mohammad Hassan Djavareshkian* 2
1PhD student Ferdowsi University of Mashhad, Mashhad, Iran
2Professor, Ferdowsi University of Mashhad, Mashhad, Iran
Receive Date: 30 May 2021,  Revise Date: 21 November 2021,  Accept Date: 10 January 2022 
Abstract
In this paper, the effect of roughness and stiffness on the aeroelasticity of an oscillating airfoil during turbulent unsteady transonic flow has been studied. In this simulation, the finite volume method is used to discretize the equations to solve the Navier-Stokes equations. In this pressure-based algorithm, a high-resolution scheme for convection term and 𝜿-ε turbulence model are used. For computing convection terms, a Normalized Variable Diagram technique is used. Here the technique of inlet velocity vector oscillation is applied. In addition, a modified 𝜿-ε model for compressible flow is applied to simulate Navier Stokes equations. The two-dimensional motion equations are obtained from the Lagrangian equations, which are combined with the aerodynamic equations. The results of validation show that the extracted data has a desirable accuracy. Furthermore, the FSI results show that, for rough airfoils, the strength of the shock wave is weakened, the shock wave moves to the trailing edge, and the oscillation of the airfoil is reduced. Also, with increasing structural stiffness, the damping of oscillations increases, and drag decreases.
Keywords
"FSI"; " Aeroelastic"; " Oscillation; "Transonic"; "Roughness"; " Stiffness"; " Unsteady"
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