Makine Mühendisliği Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/263

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COAR Access Rights: search.filters.coarAccessRights.metadata only accessDepartment: search.filters.department.Çankaya Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü

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Now showing 1 - 4 of 4
  • Conference Object
    Yüksek Sıcaklık Pem Yakıt Hücresi Mikro-Kojenerasyon Sistemi Tasarımı
    (2016) Devrim, Yılser; Üregen, Nurhan; Özgirgin Yapıcı, Ekin
  • Conference Object
    Design, Production, Theoretical And Experimental Analysis Of Parabolic Trough Solar Collector With Sun Tracking Mechanism
    (2017) Özgirgin Yapıcı, Ekin; Ünver, Eymen; Çelik, Damla; Tercan, Furkan; Ünalan, Emre; Taşkan, Gökhan
  • Conference Object
    Simultaneous Detection of Two Different Bacteria Using QDs and MNPs
    (2016) Doğan, Üzeyir; Kasap, Esin Nagihan; Çoğun, Ferah; Yıldırım, Ender; Çetin, Demet; Suludere, Zekiye; Boyacı, İsmail Hakkı; Ertaş, Nusret; Tamer, Uğur
  • Article
    EXPERIMENTAL AND NUMERICAL ANALYSIS OF FLOW OVER A PICKUP TRUCK
    (Begell House Inc, 2021) İnce, İbrahim Timuçin; Mercan, Hatice; Onur, Nevzat
    The drag forces and the overall drag coefficient of a typical pickup truck are investigated experimentally and the 3D numerical analysis is performed. A detailed 1/4-scale model is constructed and experiments are performed at Reynolds numbers around 2 × 106in the Ankara Wind Tunnel (ART). The experimental study is divided into two stages: in the first stage the pressure distribution along the symmetry axis is measured and in the second stage the drag forces and overall drag coefficient are measured at five different wind speeds. The measured data are compared with the 3D numerical simulation performed in FLUENT. The turbulence standard, realizable, and RNG k-∈ models, the standard and SST k-ω models, and finally the RSM are compared for three near-wall treatments: standard wall function, nonequilibrium wall function, and enhanced wall function. The comparison revealed that for lower velocities the best turbulence model-wall treatment couple is the realizable k-∈ model with Reynolds stress model with standard wall function, whereas for higher velocities the standard k-∈ turbulence model is observed to be more compatible with experimental data. The highest pressure value is measured in front of the pickup truck and the lowest pressure value is evaluated at the rim where the windshield and the roof meet. © 2021 Begell House Inc.. All rights reserved.