Browsing by Author "Demir,G."

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Citation - Scopus: 2
Comparison of the Eglin Test Case With Cfd Based Captive Trajectory Simulation and Grid Method
(American Institute of Aeronautics and Astronautics Inc, AIAA, 2017) Demir,G.; Erdem,M.C.; Alemdaroglu,N.
Trajectory and attitude calculations for one of the most well-known store separation case, Eglin test case, predicted by using two different methods, namely the “Captive Trajectory Method” and “Grid Surveying Method”, are integrated and the Computational Fluids Dynamic computations obtained with these tools are compared with wind tunnel experimental results. Computational results for the trajectories, Euler angles, velocities and angle rates obtained from both methods are in very good agreement with wind tunnel results. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
Citation - Scopus: 2
Computational Fluid Dynamics Modelling of Store Separation for Transonic Generic Store
(American Institute of Aeronautics and Astronautics Inc, AIAA, 2018) Demir,G.; Alemdaroğlu,N.
In this study, two different well-known wind tunnel techniques; “Captive Trajectory Method “and “Grid Surveying Method “are simulated using Computational Fluid Dynamics (CFD) method. Time dependent behavior of a generic store during the release process from a delta wing under high transonic flow regime is determined. First of all, in captive trajectory simulation, simultaneous trajectory and attitude computations are accomplished by utilizing a reliable commercial flow solver called ANSYS Fluent. Secondly, aerodynamic grid database generation required for grid surveying approach is performed and the trajectory of the store is determined by using a standalone store separation module built in MATLAB Simulink. The numerical outputs are compared with available wind tunnel results conducted in Arnold Engineering Development Center. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.