Experimental setup of a low speed axial compressor stage

Çelebioğlu, Osman


Tekin, Bilgehan; Güvenç Yazıcıoğlu, Almıla; Kerpicci, Husnu; Kakac, Sadik (2010-07-24)
Heat transfer in small scale media is a phenomenon that has been increasingly scrutinized in the past few decades. Refrigerant flow in microscale tubes and channels is a promising solution to be used in future refrigeration technology. Experimental studies are significant for the rating of the heat transfer and pressure drop in a given channel, and are important tools for optimizing applicable designs. An overview of the previous studies in this area has shown that most of the research does not focus on the...
Experimental Investigation of Viscous Flow Normal to NACA 0012 Airfoil at low Reynolds Numbers
Gunaydınoglu, Erkan; Kurtuluş, Dilek Funda (null; 2018-07-11)
The low Reynolds number aerodynamics at high angle of attack is crucial for the design of unmanned aerial vehicles and wind turbine blades. The current study aims to enhance the insight on the near wake of airfoils normal to free stream. The near wake structure on a NACA 0012 airfoil normal to free-stream is measured with particle image velocimetry in the range of Reynolds number 7000 to 20000. The velocity and vorticity fields of the wake structures are studied and further analysis with Proper Orthogonal D...
Experimental investigation of boundary layer separation control using steady vortex generator jets on low pressure turbines
Doğan, Eda; Uzol, Oğuz; Kurtuluş, Dilek Funda; Department of Aerospace Engineering (2012)
This thesis presents the results of an experimental study that investigates the effects of steady vortex generator jets (VGJs) integrated to a low pressure turbine blade to control the laminar separation bubble occurring on the suction surface of the blade at low Reynolds numbers. The injection technique involves jets issued from the holes located near the suction peak of the test blade which is in the middle of a five-blade low speed linear cascade facility. Three injection cases are tested with different ...
Experimental evaluation of alternative drive-mode control electronics developed for high-performance MEMS gyroscopes
ŞAHİN, EROL; Alper, S.E.; Akın, Tayfun (2011-06-09)
This paper presents the illustrative measurement results of a comprehensive study for understanding the effects of different drive-mode control electronic architectures on the overall performance of a micromachined capacitive vibratory gyroscope. Three different control electronic architectures have been implemented for generating either (a) square wave, (b) sinusoidal wave or (c) complex waveform driving signals for the gyroscope under test. Performance characterization of the gyroscope with these control ...
Experimental study on power curtailment of three in-line turbines
Bartl, Jan; Ostovan, Yasar; Uzol, Oğuz; Saetran, Lars (Elsevier BV; Elsevier BV; 2017-01-20)
A dataset of wind tunnel power and wake flow measurements on a setup of three aligned model wind turbines is presented. The power outputs of the three turbines are in good agreement with measurements from a full-scale wind farm of similar inter-turbine spacing. A comparison of the wake flow behind the first row and the second row shows a significantly higher mean velocity loss behind the second row justifying a further power drop from the second to the third row turbine. Curtailing the front row turbine to ...
Citation Formats
O. Çelebioğlu, “Experimental setup of a low speed axial compressor stage,” Middle East Technical University, 1998.