Towards the Application of the Shear Stress Transport Turbulence Model with Curvature Correction Modification (SSTCCM) for External Aerodynamic Flows

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Authors: Yaser H. Alahmadi, Mahmoud Bady, and Hassan Qansh
Page Range: 465-478
Published in: International Journal of Energy, Environment, and Economics, Volume 30 Issue 4
ISSN: 1054-853X

Table of Contents

ABSTRACT

Many turbulence models have been developed over the last decades to simulate aerodynamic flows. Using eddy viscosity models (EVM) to solve Reynolds Averaged Navier-Stokes (RANS) equations produces reasonably accurate outcomes for flow fields. In addition, EVMs are preferred due to their robustness and computational cost. However, accuracy and efficiency in developing a turbulence model are still formidable challenges. The present work investigates the external flow passing the NACA0012 airfoil. It examines the capability of the recently developed Shear Stress Transport Model with Curvature Correction Modification (SSTCCM) in predicting the flow behavior of external aerodynamic flows. In previous studies, the SSTCCM model accurately predicted complex internal flows, such as cyclone separators [YH Alahmadi et al., 2016. Chem. Eng. Sci. 147(6),150-165], rotating lids, and sudden expansion [YH Alahmadi et al., 2021. Ind. Eng. Chem. Res. 6016–6026]. However, the SSTCCM model has not yet been examined for cases subjected to external flows where the aerodynamic shape considerably influences the flow behavior. Accordingly, the present paper appears to be the first to investigate the SSTCCM turbulence model’s effectiveness in predicting aerodynamic flow characteristics. The results of the numerical simulations are compared with experimental measurements conducted by NASA for verification, and then the results are validated against other RANS models. The SSTCCM model shows its capability to predict the aerodynamic coefficients accurately. They also show that the SSTCCM model is more accurate than the conventional Eddy Viscosity Models (EVMs) in predicting the lift and drag coefficients, particularly at the stall angle of attack.

Keywords: CFD, Fluid Dynamics, Aerodynamics, SSTCCM, External Flow, NACA 0012, Turbulence Models

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