TY - JOUR TT - BOŞLUK ORANININ GÖRÜNTÜ İŞLEME YARDIMIYLA BULUNMASI AU - Demir, Hakan AU - Dibek, Burak PY - 2017 DA - December Y2 - 2017 DO - 10.17482/uumfd.371869 JF - Uludağ Üniversitesi Mühendislik Fakültesi Dergisi JO - UUJFE PB - Bursa Uludağ University WT - DergiPark SN - 2148-4155 SP - 97 EP - 114 VL - 22 IS - 3 KW - Image processing KW - Two-phase flow KW - Void fraction N2 - Boşluk oranı iki fazlı akışta akışın karakterinitanımlamak için kullanılan önemli parametrelerden biridir. Bununla beraberdeğişken akış koşulları ve akış türü nedeniyle boşluk oranını belirlemek çokkolay değildir. Literatürde bir boru veya kanal içinde boşluk oranını tanımlamaüzere sistem, akış ve akışkan ile ilgili parametreleri kullanan pek çok modelbulunmaktadır. Farklı akış tipleri için pek çok korelasyon bulunduğu için buçalışmada akışla ilgili herhangi bir parametre kullanmayan bir deneysel yöntemönerilmiştir.  Görüntü işleme yöntemiR600a akışkanının dairesel bir boru içerisinde iki fazlı akışına uygulanmıştır.Yüksek hızlı kamera ile elde edilen görüntüler MATLAB görüntü işleme aracınıkullanarak geliştirilen bir yazılımda işlenmiştir. Ayrıca sonuçlar literatürde sıkkullanılan korelasyonlarla karşılaştırılmıştır. CR - Armand A.A. and Treschev, G.G. (1946) The Resistance During the Movement of a Two-phase System in Horizontal Pipes, IzvestiaVse Teplotekh. Inst.,1, 16–23. CR - Baroczy C.J., (1965) Correlation of liquid fraction in two-phase flow with application to liquid metals, Chemical Engineering Progress Symposium Series, 61 (57), 179–191. CR - Bowers, C. D. and Hrnjak, P. S. 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(1996) Feasibility of high frame-rate neutron radiography by using a steady thermal neutron beam with 106 n/(cm2 s) flux, Nuclear Instruments and Methods in Physics Research, A369, 186-194. doi:10.1016/0168-9002(95)00795-4 CR - Hibiki, T., Mishima, K. and Nishihara, H. (1997) Measurement of radial void fraction distribution of two-phase flow in a metallic round tube using neutrons as microscopic probes, Nuclear Instruments and Methods in Physics Research, A399, 432-438. doi:10.1016/S0168-9002(97)00941-8 CR - Kariyasaki, A., Fukano, T., Ousaka, A. and Kagawa, M. (1991) Characteristics of time-varying void fraction in isothermal air-water concurrent flow in a horizontal capillary tube, Trans. JSME, 57, 4036-4043 CR - Kawahara A., Kawaji, M., Chung, P.M.Y., Sadatomi, M. and Okayama K. 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