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Yusuf Özyörük

Department of Aerospace Engineering
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Experiences with two detached eddy simulation approaches through use of a high-order finite volume solver
Cengiz, Kenan; Özyörük, Yusuf (Wiley, 2020-08-01)
In the present study, two advanced detached eddy simulation (DES) approaches, shear-layer-adapted delayed DES and zonal DES in mode II, which are known to help transition from RANS to LES mode, are employed in various flow...
Fully transient conjugate analysis of silica-phenolic charing ablation coupled with interior ballistics
Alanyalıoğlu, Çetin Ozan; Özyörük, Yusuf (2019-01-01)
© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.Due to its excellent insulation capability, usage of silica-phenolic charring ablator as nozzle liner is a common practice in solid ...
Three dimensional axisymmetric sound propagation through a duct with aerosol
Arslan, Ersen; Çalışkan, Mehmet; Özyörük, Yusuf (Elsevier BV, 2018-11-10)
The aim of this study is to develop solutions for the propagation of spinning sound waves in air-filled circular ducts containing water droplets (regarded as an aerosol). There exist several theoretical approaches in liter...
High-order detached eddy simulation of unsteady flow around NREL S826 airfoil
Yalçın, Özgür; Cengiz, Kenan; Özyörük, Yusuf (Elsevier BV, 2018-08-01)
Delayed detached eddy simulation (DDES) has been a common approach for unsteady turbulent flow problems, but it has several weaknesses which limit its use to detached flows. On the other hand, some enhancements introduced ...
Noise prediction of a transonic cavity flow via shear-layer-adapted delayed detached-eddy simulation
Yalçın, Özgür; Cengiz, Kenan; Özyörük, Yusuf (2018-01-01)
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.An open cavity flow contains a highly turbulent shear layer which separates from the upstream edge and impinges on the aft wall of ...
Numerical Analysis of One-Dimensional Sound Propagation Through a Duct Containing Water Droplets
Arslan, Ersen; Özyörük, Yusuf; Çalışkan, Mehmet (2017-03-01)
In this paper sound propagation through an air-filled circular duct containing water droplets has been studied by solving numerically one-dimensional linearized Euler equations in frequency domain. Interactions between the...
Application of the universal expression for erosive burning to Nozzleless solid propellant Rocket motors
Özer, Ali Can; Özyörük, Yusuf (2017-01-01)
Integral Rocket Ramjet (IRR) type propulsion systems have many advantages over conventional solid rocket motors when used in tactical missile systems. Nozzleless boosters are one of the applicable concept choices for the s...
Özyörük, Yusuf; Coupland, John; Tester, Brian J. (2015-07-16)
Understanding sound propagation through variable area ducts continues to be important for controlling turbomachinery noise. In analytical treatment of the problem it is usually assumed that duct cross sections vary slowly ...
Tester, Brian J.; Özyörük, Yusuf; Sutliff, Daniel L.; Bozak, Rick F. (2015-07-16)
Far-field inlet fan noise can usually be measured under anechoic conditions in some model scale fan rig test facilities but far-field aft fan noise measurements are often not possible because the bypass flow is ducted away...
Two dimensional numerical prediction of deflagration-to-detonation transition in porous energetic materials
Narin, B.; Özyörük, Yusuf; Ulaş, Abdullah (2014-05-30)
This paper describes a two-dimensional code developed for analyzing two-phase deflagration-to-detonation transition (DDT) phenomenon in granular, energetic, solid, explosive ingredients. The two-dimensional model is constr...