Numerical Analysis of a Flow over a Naca0015 Airfoil Containing the Flap and Gurney Flap Elements

Felipe Silva Maffei; Gabriel Angelo; Silvia Maria Stortini González Velázquez; Sergio Luis Rabelo de Almeida; Jorge Alexandre Onoda Pessanha; Edvaldo Angelo

doi:10.18535/ijsrm/v10i1.ec03

Abstract

The present work aimed at numerical simulation of a two-dimensional, incompressible and steady-state airflow over a NACA0015 airfoil with flap and Gurney flap using the standard turbulence models k-epsilon, k-omega and versions of these models with modified constants. All meshes used were structured. Comparison of the results of the turbulence models with experimental data from the literature shows differences between the results in the leading-edge region. The differences were minimized by adjusting the contents of the turbulence models. For validation, the k-epsilon turbulence model with modified constants was used in a new simulation of a profile (NACA0012), which agrees with several experimental studies; however, it does not show better results.

Keywords

Turbulence modelsNumerical simulationNACA0015 and NACA0012

References

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[refR-1] Anderson, John David, and J. Wendt. Computational fluid dynamics. Vol. 206. New York: McGraw-Hill, 1995.Google Scholar ↗

[refR-2] Durbin, Paul A., and BA Pettersson Reif. Statistical theory and modeling for turbulent flows. John Wiley & Sons, 2011.Google Scholar ↗

[refR-3] Balakumar, Ponnampalam. "Direct numerical simulation of flows over an NACA-0012 airfoil at low and moderate Reynolds numbers." 47th AIAA Fluid Dynamics Conference. 2017.Google Scholar ↗

[refR-4] Cengel, Yunus A. Fluid mechanics. Tata McGraw-Hill Education, 2010.Google Scholar ↗

[refR-5] Scuro, N. L., et al. "A CFD analysis of the flow dynamics of a directly-operated safety relief valve." Nuclear Engineering and Design 328 (2018): 321-332.Google Scholar ↗

[refR-6] Ahsan, Muhammad. "Numerical analysis of friction factor for a fully developed turbulent flow using k–ε turbulence model with enhanced wall treatment." Beni-Suef University journal of basic and applied sciences 3.4 (2014): 269-277.Google Scholar ↗

[refR-7] Angelo, Gabriel. Análise numérica da dinâmica do escoamento em circuitos de circulação natural. Dissertation (Doctor’s degree in Sciences in Nuclear Technology Area – Reactors) – Instituto de Pesquisa Energética e Nuclear, São Paulo, 2013.Google Scholar ↗

[refR-8] de Souza, Marco Antonio Sampaio Ferraz. Simulação numérica de escoamento sobre aerofólio utilizando modelo de turbulência de uma equação. Dissertation (Doctor’s degree in Engineering and Aeronautics) Instituto Tecnológico de Aeronáutica, 2009.Google Scholar ↗

[refR-9] Lee, T., and Y. Y. Su. "Lift enhancement and flow structure of airfoil with joint trailing-edge flap and Gurney flap." Experiments in fluids 50.6 (2011): 1671-1684.Google Scholar ↗

[refR-10] Gregory, Nigel, and C. L. O'reilly. "Low-speed aerodynamic characteristics of NACA 0012 aerofoil section, including the effects of upper-surface roughness simulating hoar frost." (1970).Google Scholar ↗

[refR-11] Ladson, Charles L., Acquilla S. Hill, and William G. Johnson Jr. "Pressure distributions from high Reynolds number transonic tests of an NACA 0012 airfoil in the Langley 0.3-meter transonic cryogenic tunnel." (1987).Google Scholar ↗

[refR-12] Jones, B. Melvill. "Stalling." The Aeronautical Journal 38.285 (1934): 753-770.Google Scholar ↗

[refR-13] Bursnall, William Jesse, and Laurence K. Loftin Jr. Experimental investigation of localized re-gions of laminar-boundary-layer separation. No. NACA-TN-2338. 1951.Google Scholar ↗

[refR-14] Owen, P. R., and L. Klanfer. On the laminar boundary layer separation from the leading edge of a thin aerofoilv. AERONAUTICAL RESEARCH COUNCIL LONDON (UNITED KINGDOM), 1953.Google Scholar ↗

[refR-15] Eggert, Christopher A., and Christopher L. Rumsey. "CFD study of NACA 0018 airfoil with flow control." (2017).Google Scholar ↗

[refR-16] Wilcox, David C. Turbulence modeling for CFD. Vol. 2. La Canada, CA: DCW industries, 1998.Google Scholar ↗

[refR-17] Launder, Brian Edward, and Dudley Brian Spalding. "The numerical computation of turbulent flows." Numerical prediction of flow, heat transfer, turbulence and combustion. Pergamon, 1983. 96-116.Google Scholar ↗

[refR-18] Langtry, Robin, and Florian Menter. "Transition modeling for general CFD applications in aeronautics." 43rd AIAA aerospace sciences meeting and exhibit. 2005.Google Scholar ↗

[refR-19] Walters, D. Keith, and Davor Cokljat. "A three-equation eddy-viscosity model for Reynolds-averaged Navier–Stokes simulations of transitional flow." Journal of fluids engineering 130.12 (2008).Google Scholar ↗

[refR-20] McCroskey, W. J. A critical assessment of wind tunnel results for the NACA 0012 airfoil. National Aeronautics And Space Administration Moffett Field Ca Ames Researchcenter, 1987.Google Scholar ↗

[refR-21] Stern, Fred, et al. "Comprehensive approach to verification and validation of CFD simulations—part 1: methodology and procedures." J. Fluids Eng. 123.4 (2001): 793-802.Google Scholar ↗

[refR-22] OGUMA, M. T. Estudo numérico do escoamento em elementos aerodinâmicos com o uso de gurney flap. Monograph (Graduation in Engineering) – School of Engineering, Mackenzie Presbyterian University. São Paulo, p. 86, 2013.Google Scholar ↗