Positioning analysis of the lift force sensor in subsonic wind tunnel test chamber design and its effect on naca0015 airfoil

Yıl 2023, Sayı: 055, 193 - 205, 31.12.2023

Samet Giray Tunca , Mustafa Arif Özgür

https://doi.org/10.59313/jsr-a.1369969

Öz

In this study, analysis was carried out by placing the force sensor in different positions in the subsonic wind tunnel test room. NACA0015 profile was used as the airfoil. The model used in the open system subsonic wind tunnel with a 50x50 cm test chamber was manufactured by 3D printing method. Lift force (CL) measurements were studied at Reynolds number (Re) values of 60000, 80000 and 100000. Measurements were analyzed in one-degree increments of the angle of attack, starting from 00. The force device is positioned in 4 different ways around the test room. Efficient results could not be obtained in 3 of the connection attempts. The reason why the results are not efficient is that the fasteners are incompatible with the airfoil, force device and system. The incompatibility of the fasteners caused vibration and a negative situation in the airfoil. There is a slope in the connection made from the side. As a result of the slope, the airfoil has deteriorated.
It was observed that the measurements made by positioning the force device inside the test chamber were compatible with the literature. The resulting graph shows an approach to the literature. Although it is graphically compatible, it should be noted that there is a deviation of approximately 10% in the data. Connection stiffness is gaining importance. It has been observed that stall begins at angles of approximately 100 and 110 degrees.

Anahtar Kelimeler

Wind tunnel, stall, airfoil, lift coefficient, Reynolds number

Kaynakça

• B.Polgmann and W.Würz, Experiments in Fluids, Volume 54, article number 1556, 2013
• Y.Yamaguchi, Y.Nakauchi, M.Yorozu and T.Saito, «Preliminary airfoil testing experience in the NDA cryogenic wind tunnel,» %1 içinde "ICIASF '91"., International Congress on Instrumentation in Aerospace Simulation Facilities, Rockville USA, 1991.
• C. L. Bottasso, F. Campagnolo and V. Petrovic, Wind tunnel testing of scaled wind turbine models: Beyond aerodynamics, cilt Volume 127, Journal of Wind Engineering and Industrial Aerodynamics, 2014, pp. 11-28.
• Z. X. et.al, Experimental and numerical investigation on aerodynamic performance of a novel disc-shaped wind rotor for the small-scale wind türbine, cilt Volume 175, Energy Conversion and Management, 2018, pp. 173-191.
• İ. Göv, M. H. Doğru and Ü. Korkmaz, Uçuş esnasında değiştirilebilir kanat profili kullanarak NACA 4412’nin aerodinamik performansının artırılması, cilt 34, Ankara: Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 2019, pp. 1109-1125.
• G.-M. Du, J.-H. Chou and P.-K. Huang, Application of Taguchi experimental method in the optimal design of the NACA cascades wing, Taiwan, Puli: 2016 International Conference on System Science and Engineering (ICSSE), 2016.
• R. I. Rubel, M. Uddin, M. Islam and M. Rokunuzzaman, Numerical and Experimental Investigation of Aerodynamics Characteristics of NACA 0015 Aerofoil, cilt Vol.2, International Journal of Engineering Technologies, 2016, pp. 132-142.
• O.-S. Gim and G.-W. Lee, Flow characteristics and tip vortex formation around a NACA 0018 foil with anendplate, cilt Vol.60, Ocean Engineering, 2013, pp. 28-38.
• P. Sidlof, V. Vlcek and M. Stepan, Experimental investigation of flow-induced vibration of a pitch–plunge NACA 0015 airfoil under deep dynamic stall, cilt Vol.67, Journal of Fluids and Structures, 2016, pp. 48-59.
• S. Sarjito, Studı Karakterıstık Aırfoıl Naca 2410 Dan Naca 0012pada Berbagaı Varıası Angle Of Attack, Media Mesin Majalah Teknik Mesin, 2010.
• Michos A., Bergeles G. and Athanassiadis N., Aerodynamic Characteristics of NACA 0012 Airfoil in Relation to Wind Generators, cilt 7:4, United Kingdom: Wind Engineering, 1984, pp. 247-262.
• M. Belan and F. Messanelli, Wind tunnel testing of multi-tip corona actuators on a symmetric airfoil, cilt Vol.85, Journal of Electrostatics, 2017, pp. 23-34.
• E.V.Laitone, Wind tunnel tests of wings at Reynolds numbers below 70 000, cilt Vol.23, Experiments in Fluids, 1997, pp. 405-409.
• J.M.Rainbird, J.Peiro and J.M.R.Graham, Blockage-tolerant wind tunnel measurements for a NACA 0012 at high angles of attack, cilt Vol.145, Journal of Wind Engineering and Industrial Aerodynamics, 2015, pp. 2019-218.
• D.R.Troolin, E.K.Longmire and W.T.Lai, Time resolved PIV analysis of flow over a NACA 0015 airfoil with Gurney flap, cilt Vol.41, Experiments in Fluids, 2006, pp. 241-254.
• M. Kaya, Aırfoıl Yapının Yakın Çevresindeki Hız Ve Basınç Dağılımının Hesaplamalı Akışkanlar Dinamiği Yöntemi İle İncelenmesi, Cilt %1 / %24-1, Erzincan: Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2014, pp. 59-69.
• D. Miklosovic, M. Murray, L. Howle and F. Fish, Leading-edge tubercles delay stall on humpback whale (Megaptera novaeangliae) flippers, Cilt %1 / %216-5, Physics of Fluids, 2004, pp. L39-43.
• H. Hamdani and M. Sun, Aerodynamic Forces and Flow Structures of an Airfoil in Some Unsteady Motions at Small Reynolds Number, cilt Vol.145, Acta Mechanica, 2000, pp. 173-187.
• S. A. Kazemi, M. Nili-Ahmadabadi, A. Sedaghat and M. Saghafian, Aerodynamic performance of a circulating airfoil section for Magnus systems via numerical simulation and flow visualization, cilt Vol.104, Energy, 2016, pp. 1-15.
• H. E. Tanürün, İ. Ata, M. E. Canlı and A. Acır , Farklı açıklık oranlarındaki NACA-0018 rüzgâr türbini kanat modeli performansının sayısal ve deneysel incelenmesi, cilt 23, Politeknik Dergisi, 2020, pp. 371-381.
• A. A. Güler, Naca0015 Model Uçak Kanadi Etrafindaki Akişin Plazma Aktüatör İle Aktif Kontrolünde Sinyal Modülasyonunun Deneysel İncelenmesi, Niğde Ömer Halisdemir Üniversitesi Fen Bilimleri Enstitüsü, 2013.
• A. Pope, The forces and moments over an NACA 0015 airfoil, cilt Vol.58, Georgia Institue of Technology, Published in: Aero Digest, 1949.