Abstract
The aerodynamic characteristics of a rough NACA 0012 airfoil with different surface roughness conditions at various angles of attack are investigated numerically. A new flow physics-based surface roughness modeling approach with a second-order turbulence closure developed for high Reynolds number Reynolds-averaged Navier-Stokes equations type of calculations is used. The fluid dynamics of the volume-averaged flow in the near-wall rough layer is modeled by using the Brinkman equation. The resulting parameters, such as porosity, allow a direct inclusion of the geometric characteristics of the roughness element and their pattern in the model equations. The computational results, including the surface pressure, lift, and drag coefficients, and mean velocity profiles, are presented. The results show that this new second-order closure of the rough wall layer modeling approach predicts well the effects of surface roughness on the aerodynamic characteristics of a rough NACA 0012 airfoil before the separation occurs.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
