Yazar "Bakirci, M." seçeneğine göre listele

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    AERODYNAMIC ANALYSIS OF A SUBSONIC AIRCRAFT WING USING COMPUTATIONAL FLUID MODELLING
    (EUROSIS-ETI, 2024) Jweeg, M.J.; Bakirci, M.; Ismael, I.J.
    Aircraft designers are mainly interested in finding the level of pressure, stresses and deformations of the parts of the aircraft, especially the wing, as in many aviation accidents, the failure of the wing was the main cause of disasters due to the aerodynamic loading. In this work, the numerical study was achieved to obtain the aerodynamic loading, span wise and chord wise. In this respect, the volume method was used to predict the pressure distribution of the wing in the subsonic potential flow. The singularity strength which satisfies the boundary condition of the tangential flow at the control point for a given Mach number and the angle of attack was employed in the package in which the design was achieved using the 3D geometry model by using the Software SOLIDWORKS 2020 and the second step was processing the governing differential equations for airflow over a wing by ANSYS FLUENT 2022 R1 version solver by utilizing a Finite Element Method. Finally, the results were compared with other research which have shown to be in good agreement. © 2024, EUROSIS-ETI. All rights reserved.
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    An Optimum Design of a Subsonic Aircraft Wing due to the Aerodynamic Loading
    (Hindawi Limited, 2024) Ismeal, I.J.; Bakirci, M.; Jweeg, M.J.
    Aircraft designers are mainly interested in finding the level of pressure, stresses, and deformations of the parts of the aircraft wing. In many aviation accidents, the failure of the wing is the main cause of disasters, as it is considered the main surface that generates the necessary lift for the aircraft in addition to its other functions in controlling the transverse stability. In this work, a numerical study was performed to obtain the optimum wing structural design parameters for high strength and minimum weight for the L-39 A/C wing. The wing was modeled as a honeycomb with different thicknesses using the software SOLIDWORKS 2020. The pressure distribution was predicted using the FLUENT 2022 R1 package. Having obtained the aerodynamic pressure, the deformations and stresses were obtained using the ANSYS program. The results were compared with other researchers using other models, such as using ribs and stringers in the interior structure of the wing. The current results were found to be reliable and acceptable from the design point of view of the high stiffness-to-weight ratio. © 2024 Ibtisam J. Ismeal et al.
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    Upper Cooling Water Technique for Enhancing the Performance of PV Module
    (American Institute of Physics Inc., 2023) Al-Mamoori, A.; Bakirci, M.; Al-Zuhayri, A.
    The abundance and sustainability of solar radiation has enabled consumers to take advantage of photovoltaic technology while leaving polluting energy sources. the high temperature stored in the surfaces still to be a barrier to the monocrystalline photovoltaic module's advancement in terms of performance, In addition to its destruction and short life in the long run. The idea of this article is to undertake an experimental investigation into improving the thermal and electrical properties of photovoltaic panels erected in the harsh environment of Iraq. The system was implemented based on hybrid passive cooling technology with the help of spray nozzles overflowing with water on front of the panel. The upper photovoltaic panel surface cooling approach is one of the most promising technologies in heat dissipation, leading to improved electrical properties. The experiment was carried out in a hot, low-wind, highly radioactive climate with a choice of low and high flows, i.e., 1 and 3 L/m, respectively. Analysis of the results of the maximum flow indicated that the panel temperature was reduced by about half-compared to the uncooled panel and in the same context; the infrared images supported these results. After dissipation, the output power was observed to increase by 19.77% and 57.23%, respectively, as did the efficiency, which increased by 18.76% and 47.52% for the 1 and 3 L/m flows, respectively. Finally, the 3 L/m flow was effective in removing a significant amount of heat while also improving the electrical characteristics. On the other hand, the study found that using drainage water to irrigate crops to get through the dry season was economically feasible. © 2023 American Institute of Physics Inc.. All rights reserved.