Title: Aerodynamics of symmetric permeable airfoils and wings: CFD simulation

Authors: Mohammad Aldheeb; Waqar Asrar; Ashraf A. Omar; Afaq Altaf; Erwin Sulaeman

Addresses: Mechanical Engineering Department, International Islamic University Malaysia, 53100, Kuala Lumpur, Malaysia ' Mechanical Engineering Department, International Islamic University Malaysia, 53100, Kuala Lumpur, Malaysia ' Department of Aerospace Engineering, The International University of Rabat, Rabat, Morocco ' New York Institute of Technology, CETT Compound, Abu Dhabi, P.O Box 5464, UAE ' Mechanical Engineering Department, International Islamic University Malaysia, 53100, Kuala Lumpur, Malaysia

Abstract: This paper presents a simple, and effective CFD modelling of a permeable thin symmetric, NACA 0008, 3D wing and airfoil at a Reynolds number of 3.45 × 10⁵ using the StarCCM+ software. The results are validated against wind tunnel aerodynamic balance data. The aerodynamic performance of both permeable wing and airfoil is presented in terms of lift, drag, lift to drag ratio, and moment coefficients by varying permeability values and permeable sections. The lift slopes show good agreement with analytical and experimental data. The results show a decrease in drag at low values of permeability which results in an increase in the lift to drag ratio up to 72% for permeable airfoil and 65% for the permeable wing. A strong effect of permeability and its location on the pitching moment coefficient is observed, opening up avenues for the control of stability through permeability.

Keywords: permeability; permeable airfoil; permeable wing; aerodynamics; porosity.

DOI: 10.1504/PCFD.2020.111397

Progress in Computational Fluid Dynamics, An International Journal, 2020 Vol.20 No.6, pp.349 - 362

Received: 09 Feb 2019
Accepted: 18 Jan 2020
Published online: 25 Nov 2020 *

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