Yarık açılan NACA 0018 etrafındaki Akış Yapısının Sayısal İncelenmesi

Yıl 2023, Cilt: 6 Sayı: Ek Sayı, 152 - 167, 20.12.2023

Ömer Fethi Aşan , Emre Güler , Muhammed Murat Aksoy , Engin Pınar , Tahir Durhasan

Öz

Çeşitli hücum açılarında yarık açılan NACA 0018 kanat profilini sayısal olarak inceledik. Hesaplamalı akışkanlar dinamiği (CFD) sonuçları, kanat profilinin etkinliğini göstermek için temel kanat profili ile karşılaştırıldı. Farklı yarık konumlarının aerodinamik perspektiften pasif akış kontrolünü nasıl sağlayacağını iyice anlamak için Reynolds sayısı Re = 3x105 olarak sabit tutuldu. Daha yüksek hücum açıları için temel kanat profiline kıyasla, yarıkların etkinliğini ortaya çıkarmak için üç farklı yarık konumu kullandık. Sonuçlarımız, yarıklı tasarımın kaldırmayı artırmaya ve temel kanat profilinin perdövites açısını geciktirmeye yol açacağını göstermektedir.

Anahtar Kelimeler

Kanat profili, HAD, Reynolds sayısı, Yarık, Pasif akış kontrolü

Numerical Investigation of Flow Structure around NACA 0018 with slot

Öz

We numerically investigated NACA 0018 airfoil with slot at various angles of attack. The computational fluid dynamics (CFD) results were compared with the base airfoil to show the effectiveness of the airfoil. Reynolds number was kept constant as Re=3x105 to thoroughly understand how different locations of slot would provide passive flow control from aerodynamic perspective. We have used three different slot locations to reveal the effectiveness of the slot compared to the base airfoil for higher angles of attack. Our results show that the slotted design would yield to increase the lift and to delay the stall angle of base airfoil.

Anahtar Kelimeler

Airfoil, CFD, Reynolds number, Slot, Passive flow control

Kaynakça

• Abbasi S., Souri M. Reducing aerodynamic noise in a rod-airfoil using suction and blowing control method. International Journal of Applied Mechanics 2020; 12: 2050036.
• Aley KS., Guha TK., Kumar R. Active flow control of a high-lift supercritical airfoil with microjet actuators. AIAA Journal 2020; 58: 2053–2069.
• Belamadi R., Djemili A., Ilinca A., Mdouki R. Aerodynamic performance analysis of slotted airfoils for application to wind turbine blades. Journal of Wind Engineering and Industrial Aerodynamics 2016; 151: 79–99.
• Beyhaghi S., Amano RS. A parametric study on leading-edge slots used on wind turbine airfoils at various angles of attack. Journal of Wind Engineering and Industrial Aerodynamics 2018; 175: 43–52.
• Güzelbey İH., Eraslan Y., Doğru MH. Numerical investigation of different airfoils at low reynolds number in terms of aerodynamic performance of sailplanes by using XFLR5. Karadeniz Fen Bilimleri Dergisi 2018; 8: 47–65.
• Husseı̇n E., Azzı̇z H., Rashı̇d F. Aerodynamic study of slotted flap for NACA 24012 airfoil by dynamic mesh techniques and visualization flow. Journal of Thermal Engineering 2021; 7: 230–9.
• Jacobs EN. Airfoil section characteristics as affected by variations of the reynolds number. NACA Report 1937; 586. Maldonado V., Peralta N., Gorumlu S., Ayele W., Santos D. Aeroelastic response of a propulsive rotor blade with synthetic jets. Journal of Fluids and Structures 2021; 107: 103411.
• Menter FR. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal 1994; 32: 1598–1605.
• Metzinger CN., Chow R., Baker JP., Cooperman AM., van Dam CP. Experimental and computational investigation of blunt trailing-edge airfoils with splitter plates. AIAA Journal 2018; 56: 3229–39.
• Mohamed OS., Ibrahim AA., Etman AK., Abdelfatah AA., Elbaz AMR. Numerical investigation of Darrieus wind turbine with slotted airfoil blades. Energy Conversion and Management: X 2020; 5: 100026.
• Mohamed WMW., Ravindran NP., Rajendran P. A CFD Simulation on the performance of slotted propeller design for various airfoil configurations. CFD Letters 2021; 13: 43–57.