Department of Aerospace Engineering, Conference / Seminar

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Recent Submissions

Investigation of Ignition Overpressure Over a Launch Pad using Open-Source CFD Solvers Danışan, Ercan Umut; Iriolya, Tohid Ghorbani; Duru, Murat Özüm; Gündem, Doğukan; Eyi, Sinan (2026-01-01) During rocket ignition and liftoff, strong transient pressure waves propagate within the launch pad environment and impinge on the launch vehicle, flame deflector and surrounding structures. Controlling pressure waves play...
Modelling of Damage and Failure in Multi-Phase Microstructures through Phase Field Fracture Erdoğan, Can; Yalçınkaya, Tuncay (2026-01-01) Multi-phase materials, such as fiber reinforced composites, metal matrix composites, or dual-phase steels, contain two or more contrasting phases within their microstructures. The coexistence of hard/brittle phases with so...
Numerical Investigation of Water Injection Effects on Jet Centerline Temperature and Ignition Overpressure by Using OpenFOAM Irirolya, Tohid Ghorbani; Eyi, Sinan; Tsutsumi, Seiji (2026-01-01) Analyzing and correctly designing of the launch environment is necessary for haveing a safe and successful launch. During launch, two kinds of pressure waves appear: (1) ignition overpressure (IOP) waves and (2) acoustic w...
Numerical Investigation of Gaps and Overlaps in Variable Stiffness Composites Using Alternative Defect Modeling Approaches Demirer, Halime Gül; Kayran, Altan (2026-01-01) This study examines the structural response of variable stiffness (VS) composite laminates manufactured by Automated Fiber Placement (AFP), focusing on the effects of gaps and overlaps on buckling and post-buckling damage ...
Numerical Analysis of Pressure Wave Propagation at Rocket Launch Pads Using Open-Source CFD Solvers Gündem, Doğukan; Iriolya, Tohid Ghorbani; Danışan, Ercan Umut; Ç Etin, Esra Buse; Atılkan, Yavuz; Eyi, Sinan (2026-01-01) Ignition overpressure (IOP) waves are generated during ignition of the rocket. IOP is a transient phenomenon that occurs as a sudden burst of exhaust gases during lift-off. This wave has a high pressure magnitude and a rel...
Impact of Shock Boundary Layer Interaction on Swirl Characteristics in Supersonic Intakes with Bleed System Özcan, Muhammed Enes; Sezer Uzol, Nilay (2026-01-01) Flow quality at the engine face, in particular total pressure distribution and swirl characteristics, is critical for the aerodynamic performance and stability of external compression supersonic inlets. Shock wave boundary...
Aerodynamic Analysis of Wind Turbine Airfoils with a Nested Krylov Subspace Solver Implementation in SU2 Akcengiz, Ezgi Orbay; Sezer Uzol, Nilay (2026-01-01) Accurate aerodynamic characterization of wind turbine airfoils is important for optimizing rotor performance, particularly at high Reynolds numbers where phenomena such as stall and transition significantly affect lift and...
Numerical Analysis of a Flame Deflector Using Reactive an Non-Reactive Flow Models Irirolya, Tohid Ghorbani; Eyi, Sinan; Tsutsumi, Seiji (2026-01-01) During the ignition of solid and liquid rocket motors, ignition overpressure (IOP) wave is generated. The IOP is caused by the rapid expansion of exhaust gases, which compress the surrounding air and behaves like blast wav...
COMBUSTION CHEMISTRY ACCELERATION USING NEURAL NETWORKS Göçer, Furkan; Karaca, Mehmet; Sivaslıgil, Mustafa (2026-01-01) Combustion simulations with detailed chemical kinetics are computationally expensive because chemical substeps dominate the computational time. To address this challenge, we develop a neural network model for hydrogen/air ...
Mitigation of Ignition Overpressure in Launch Pads via Unsteady Adjoint-Based Optimization Danışan, Ercan Umut; Eyi, Sinan (2026-01-01) The solid rocket boosters (SRBs) of space launch vehicles generate powerful Ignition Overpressure (IOP) waves during the early stages of lift-off. These IOP waves propagate through launch environment and are reflected back...
Swirl and Jet Flow Interaction over Film-Cooling Plates Arslan Arslane@Metu.Edu.Tr, Enes; Başkan Perçin, Özge; Perçin, Mustafa; Uzol, Oğuz; Turkeri, Hasret (2026-01-01) This study experimentally investigates the film-cooling effectiveness and associated flowfield characteristics of two plate geometries subjected to both uniform and swirling inflow conditions. The first configuration is a ...
Numerical Study of Combustion Instabilities in a Single Injector Combustor Öztürkmen, Musa Onur; Özyörük, Yusuf (2026-01-01) The interactions between the unsteady heat release rate and pressure fluctuations in a combustion chamber may lead to thermoacoustic instabilities depending on the phase relationship between the two. In many instances, the...
Computational Investigation of Perpendicular Blade-Vortex Interaction Arican, Mahmut; Kahveci, Harika Senem (2025-10-15)
Data-Driven Optimization of Transition Modeling for Improved Boundary Layer Predictions Peksag, Baris Berkay; Kahveci, Harika Senem (2025-10-15)
Simulation and Control of an Unmanned Lunar Rover at the Moon’s South Pole: Leveraging Challenging Illumination Conditions for Enhanced Exploration Durmaz, Atakan; Güloğlu, Görkem Eğemen; Turgut, Ali Emre; Alatan, Abdullah Aydın; Söken, Halil Ersin; Ankaralı, Mustafa Mert; Üstündaş, Şahin Umutcan; Özduygu, Mete Oğulcan (2025-09-29) This study explores the motion planning and control of a lunar rover designed for exploration at the Moon's south pole. The mission aims to explore permanently shadowed regions believed to contain water ice deposits, ident...
A LITERATURE SURVEY ON THE AERODYNAMIC PERFORMANCE OF DISTRIBUTED PROPULSION SYSTEMS ÇAVLI, DOĞA; Çolak, Ilgın; KILCI, TUĞÇE; ERİKLİ, HÜSEYİN METİN; MUTLU, HASAN; TANRIVERDİ YATKIN, SERENAY; ÇÖMEZ, FADİLE YUDUM; ÇAVLI, DOĞA; Eşdur, Merve; ANILIR, BERKAN; ERİKLİ, HÜSEYİN METİN; MUTLU, HASAN; TANRIVERDİ YATKIN, SERENAY; ÇÖMEZ, FADİLE YUDUM; KARA, EMRE; SOLAKOĞLU, ERHAN; KURTULUŞ, DİLEK FUNDA; EFE, MEHMET ÖNDER (2025-09-19)
A LITERATURE SURVEY ON THE AERODYNAMIC PERFORMANCE OF DISTRIBUTED PROPULSION SYSTEMS Çavlı, Doğa; Çolak, Ilgın; Eşdur, Merve; Anılır, Berkan; Kılcı, Tuğçe; Erikli, Hüseyin Metin; Yatkın, Serenay Tanrıverdi; Çömez, Fadile Yudum; SOLAKOĞLU, ERHAN; Kurtuluş, Dilek Funda; EFE, MEHMET ÖNDER (2025-09-17)
NUMERICAL MODELING OF BIRD AND DRONE STRIKES ON COMPOSITE RADOME STRUCTURES Yurt, Akif; Ersoy, Kurtuluş; Şahin, Melin; Güloğlu, Görkem Eğemen (2025-09-17)
A nonlinear toy model for jet noise modelling and control Karban, Uğur; Martini, Eduardo; Jordan, Peter (2025-08-29) Modelling and controlling jet noise are a notoriously difficult tasks, particularly at subsonic levels, dueto the subtlety of noise-generating mechanisms. Developing reduced-order models to study thesemechanisms and possib...
Implementing Quaternion-Based Nonlinear Control for Quadrotors in PX-4 Autopilot Framework Yücel, Utku; Tekinalp, Ozan (2025-07-04) This study presents two workflows for integrating a previously developed Quaternion-Based Nonlinear Controller and a Linear Quadratic Tracking Velocity Controller (QNC-LQT) into the PX4 autopilot framework: (1) using the ...

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