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Recent Submissions

Paralel Moleküler Dinamik Simülasyonları ile Türbülanslı Akışların İncelenmesi Adam, Ali Ata; Sezer Uzol, Nilay; Çıray, Cahit; Kabakcı, İsmail (2022-09-16) Moleküler dinamik simülasyonları sürekli ortam varsayımının uygun olmadığı akış problemleri için kullanılabilir ve bu tür akış simülasyonlarında türbülans mikro ölçekte incelenebilir. Bu çalışmada, daha önce geliştirilmiş ...
Rüzgar Türbini Kanat Kesiti Aerodinamiğinin Optimize Edilmiş Sınır Tabaka Emme Sistemi ile İncelenmesi Adam, Ali Ata; Sezer Uzol, Nilay (2022-09-15) Rüzgar türbinlerine eklenen aktif akış kontrol sistemleri elde edilen enerjinin farklı akış koşulları boyunca en yüksek seviyede tutulabilmesi için kullanılabilmektedir. Bu çalışmada kontrol sistemleri içerisinde yer alan ...
Journal of Physics: Conference Series PAPER • THE FOLLOWING ARTICLE ISOPEN ACCESS Effects of freestream turbulence on the wake growth rate of a model wind turbine and a porous disc Öztürk, Buğrahan; Hassanein, Abdelrahman; Akpolat, Tuğrul; Abdulrahim, Anas; Perçin, Mustafa; Uzol, Oğuz (2022-06-05) This study presents the results of an experimental investigation that focuses on quantifying the differences between the spreading rates of a model wind turbine wake and a porous disc wake at different freestream turbulenc...
Design of a gust generator and comparison of model wind turbine and porous disc wake flows in a transverse gust Yığılı, İmge; Andırın, Mert Ali; Akpolat, Mehmet Tuğrul; Başkan Perçin, Özge; Perçin, Mustafa; Uzol, Oğuz (2022-06-05) This paper outlines the similarities and di erences between the wake characteristics of a porous disc and model wind turbine under transverse gust loading which is generated via a two-vane wind tunnel gust generator. Phase...
Effect of blade contamination on power production of wind turbines Özgen, Serkan; Sarlbel, Eda Bahar; Yaman, Ali Rlza (2022-06-02) © Published under licence by IOP Publishing Ltd.Wind turbines suffer from considerable power losses because of contamination on their blades, that can be due to erosion, wear, smog, insect, sand and dust particle impact. B...
A Modification to Adaptive Control with Time-varying Learning Rate for Improved Transient Performance Yayla, Metehan; Kutay, Ali Türker (2022-01-01) © 2022, American Institute of Aeronautics and Astronautics Inc. All rights reserved.In this study, we propose a new adaptive weight update law using frequency-limited estimation of the matched uncertainty. Many adaptive pa...
Aeroelastic Model Corrections of a Very Light Aircraft; Implications on Static Trim, Flutter and Gust Response Demirer, Halime Gül; Kayran, Altan (2022-01-01) © 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.This paper discusses the aeroelastic model corrections employed in the static and dynamic aeroelastic analysis of a very light aircr...
Investigation of a Solution Approach to Quadratic Eigenvalue Problem for Thermoacoustic Instabilities Öztürkmen, Musa Onur; Özyörük, Yusuf (2022-01-01) © 2022, American Institute of Aeronautics and Astronautics Inc.. All rights reserved.The interactions between the unsteady heat release and pressure fluctuations in a combustion chamber may lead to thermoacoustic instabili...
Adjoint Based Shape Optimization of an S-Shaped Duct with SU2 Kucuk, Umut Can; Tuncer, İsmail Hakkı (2022-01-01) © 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.In this study, an adjoint based aerodynamic shape optimization of an intake duct is performed for a set of objectives. The objective...
Adjoint based design optimization of subsonic airfoils using a panel code together with a rans solver Sarikaya, Berk; Tuncer, İsmail Hakkı (2022-01-01) © 2022, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.The automatic differentiation tool, FDOT, is employed to perform sensitivity analyses on an in-house panel code. Sensitivity derivat...
Aerodynamic Performance Predictions of Martian Helicopter Co-Axial Rotor in Hover by using Unsteady CFD Simulations Küçükoğlu, Onur; Sakaoğlu, Sergen; Sezer Uzol, Nilay (2021-11-25)
Numerical Validation Study of a Helicopter Rotor in Hover by using SU2 CFD Solver Sunay, Yunus Emre; Sezer Uzol, Nilay (2021-11-25)
Numerical Simulation of Spray Characteristics of Doublet Injectors Gulmez, Senem; Kahveci, Harika Senem (2021-09-30)
Modeling the flapping motion via quasi-steady approach and controlling the longitudinal dynamics of a flapping wing mav Çalış, Özgün; Kurtuluş, Dilek Funda; ARIKAN, KUTLUK BİLGE (2021-09-10) An aerodynamic model in order to simulate and control the flapping-wing micro air vehicle based on the quasi-steady approach and blade element theory is developed to calculate the instantaneous aerodynamic forces and momen...
Modeling of the Hawkmoth Wing and its implementation in a flapping wing mechanism Ökmen, Aytek Altuga; ARIKAN, KUTLUK BİLGE; Kurtuluş, Dilek Funda (2021-09-10) Main aim of this study is to accurately model the wing of a hawkmoth (Manduca sexta) in order to implement it in a flapping wing mechanism for a micro aerial vehicle (MAV). The wing is first modeled in ANSYS/SpaceClaim the...
Generic trim analysis and simulation algorithm creation for design and optimization of the fixed wing aircraft Özdemir, Mustafa; Kurtuluş, Dilek Funda (2021-09-10) In order to design a fixed wing aircraft, certain phases are needed to perform. From these phases, trim analysis and simulation are very crucial for design process. Trim and simulation analysis enable to calculate performa...
FAST AERODYNAMIC ANALYSIS AND DESIGN OF A JET AIRCRAFT BY USING PANEL METHOD Kumser, Fatma Zülal; Öztürk, Ümran; Kıldiş, Pamir; Adam, Ali Ata; Sezer Uzol, Nilay; Ertem, Sercan; Ayan, Erdem (2021-09-10) Fast and parametrical aerodynamic analyses for design of high speed jet aircraft is important especially during the initial design phases. In this study, different wing/body configurations defined with specific geome...
AERODYNAMIC ANALYSIS OF SUPERSONIC FLOW OVER A SIMPLE AIRCRAFT GEOMETRY BY USING CST AND PANEL METHODS Uğur, Levent; Turan, Sena; Gedik, Ramazan Kürşat; Adam, Ali Ata; Sezer Uzol, Nilay; Ertem, Sercan; Ayan, Erdem (2021-09-10) In this paper, the aerodynamic properties of a selected aircraft geometry are calculated in supersonic flow condition using PANAIR. PANAIR is an open-source high-order panel method solver for irrotational and invisci...
UNSTEADY AERODYNAMICS OF CAMBERED AIRFOILS AT LOW REYNOLDS NUMBER Ahmed, Tawfiq; Kurtuluş, Dilek Funda (2021-09-10)
DETERMINATION OF WAKE SHAPES BEHIND A WIND TURBINE THROUGH CFD SIMULATIONS AND COMPARISON WITH ANALYTICAL WAKE MODELS Adam, Ali Ata; Sezer Uzol, Nilay; Uzol, Oğuz (2021-09-10) In this paper, wake shapes of wind turbine rotors are investigated by using CFD and analytical wake models. The flow around the NTNU model turbine is simulated using the Reynolds-Averaged Navier-Stokes Equations with Spala...

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