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      Turbulent Kinetic Energy Analysis of NACA0012 and NACA0018 Airfoils at Two Reynolds Number Using CFD Tool

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            Abstract

            To improve the design and performance of an airfoil, its aerodynamic properties must be studied properly. The turbulence kinetic energy of two symmetric airfoils (NACA 0018 and NACA 0012) was investigated in this study at two separate Reynolds numbers of 300,000 and 700,000. This computational simulation work presented in this paper yields some interesting results. The distribution of turbulence kinetic energy across both airfoils at various angles of attack and under two different airstream velocities is illustrated in this paper. Due to flow separation, there has been a significant amount of turbulence observed after the stall angle. The final results show that the NACA 0018 airfoil produces significantly more turbulence than the NACA 0012 airfoil. And it happens because as the thickness of the airfoil increases, there is more friction with the air particle. In the second comparison, in terms of Reynolds number or airstream velocity, higher velocity produces more turbulence, as shown by the red zone in this paper. As turbulence is always expected to be as low as possible in aircraft, it is recommended to use NACA 0012 airfoil in aircraft applications and NACA 0018 airfoil usage in horizontal or vertical axis wind turbine applications where turbulence is of less importance.

            Content

            Author and article information

            Journal
            ScienceOpen Preprints
            ScienceOpen
            16 March 2022
            Affiliations
            [1 ] Department of Mechatronics and Industrial Engineering, PME Building, Chittagong University of Engineering and Technology, Bangladesh-4349
            [2 ] Mechanical Engineer, Dasherkandi Sewage Treatment Plant (500MLD) Project, Bangladesh
            [3 ] Lecturer, Dept. of Mechanical Engineering, City University, Bangladesh
            Author notes
            Article
            10.14293/S2199-1006.1.SOR-.PPQGB0H.v1
            355e2a0c-db0b-4a1a-b968-b89ca8eb92d6

            This work has been published open access under Creative Commons Attribution License CC BY 4.0 , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conditions, terms of use and publishing policy can be found at www.scienceopen.com .


            All data generated or analysed during this study are included in this published article (and its supplementary information files).
            Engineering,Mechanical engineering,Renewable energy
            NACA, Reynolds Number, Turbulence Kinetic Energy, Angle of Attack, Velocity

            References

            1. HOWE M. S., LAUCHLE G. C., WANG J.. Aerodynamic lift and drag fluctuations of a sphere. Journal of Fluid Mechanics. Vol. 436:41–57. 2001. Cambridge University Press (CUP). [Cross Ref]

            2. Maleki Dastjerdi Sajad, Gharali Kobra, Al-Haq Armughan, Nathwani Jatin. Application of Simultaneous Symmetric and Cambered Airfoils in Novel Vertical Axis Wind Turbines. Applied Sciences. Vol. 11(17)2021. MDPI AG. [Cross Ref]

            3. Pranto Md Rhyhanul Islam, Inam Mohammad Ilias. Numerical Analysis of the Aerodynamic Characteristics of NACA-4312 Airfoil. Journal of Engineering Advancements. Vol. 01(02):29–36. 2020. SciEnPG. [Cross Ref]

            4. Mubassira Subah, Muna Farhana Islam, Inam Mohammad Ilias. Numerical Investigation of Aerodynamic Characteristics of NACA 4312 Airfoil with Gurney Flap. Journal of Engineering Advancements. 1–8. 2021. SciEnPG. [Cross Ref]

            5. O' Connor Anthony, Kearney Derek. Evaluate the Effect of Turbulence on Aircraft During Landing and Take-Off Phases. International Journal of Aviation, Aeronautics, and Aerospace. 2018. Embry-Riddle Aeronautical University/Hunt Library. [Cross Ref]

            6. Shabur Abdus, Hasan Afnan, Ali Mohammad. Comparison of Aerodynamic Behaviour between NACA 0018 and NACA 0012 Airfoils at Low Reynolds Number Through CFD Analysis. 2020. Zenodo. [Cross Ref]

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