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Journal of Applied Fluid Mechanics، جلد ۱۷، شماره ۱۲، صفحات ۲۷۲۰-۲۷۳۳
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عنوان انگلیسی Increasing L/D Ratio of Wing by Delaying Flow Separation for Better Aerodynamic Performance
چکیده انگلیسی مقاله To improve the aerodynamic efficiency of the aircraft, the article focuses on optimizing the L/D ratio through postponement of flow separation. Elevating the L/D ratio leads to diminished drag and delays stall occurrence at high angles of attack (α). The wing geometry adopts NACA 6-digit airfoils, specifically NACA 63418 and NACA 63415. Various aerodynamic devices are explored for their ability to defer flow separation, with passive aerodynamic devices being the prevalent choice. The primary goal of the research is to integrate rotational thin wire elements into the aerodynamic components of the wing, aiming to diminish drag, amplify lift, and enhance overall aerodynamic performance. The analysis spans a range of α, from 0o to 20o. The study encompasses two scenarios: one without the incorporation of aerodynamic devices and the other with their implementation. Comparative analyses of increases in CL and reductions in CD, with notable improvements observed at a 15o angle of attack, 28.47% increase in CL and 15.07% decrease in CD. Furthermore, the improved performance in the CL/CD, which increases substantially in stall conditions, thereby demonstrating the potential of these aerodynamic modifications to enhance overall aircraft performance.
کلیدواژه‌های انگلیسی مقاله Boundary Layer,Flow separation,Drag force,Lift force,Circulation
نویسندگان مقاله L. P. Ramesh |
Department of Mechanical Engineering, SRM Valliammai Engineering College, Kanchipuram, Tamilnadu, 603203, India

V. Mugendiran |
Department of Production Technology, Anna University (MIT) Campus, Chennai, Tamilnadu, 600044, India

G. Sivaraj |
Subsonic Airflow Testing Facility, Research Park, Bannari Amman Institute of Technology, Erode, Tamilnadu, 638401, India

نشانی اینترنتی https://www.jafmonline.net/article_2525_4791cc6cd2820c3f4f7eb8a67e28ca99.pdf
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