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2011 - 20154
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Bölüm: Batman Üniversitesi Mühendislik - Mimarlık Fakültesi Makine Mühendisliği Bölümü × Konu: Turbulator ×

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Listeleniyor 1 - 4 / 4
  • Küçük Resim
    Öğe
    Konsantrik boru tip ısı değiştiricilerinde türbülatörlerin kanat delik geometrisinin ısı transferine ve basınç düşüşüne etkisi
    (Fırat Üniversitesi, 2011) Işık, Mehmet Zerrakki; Argunhan, Zeki; Yıldız, Cengiz
    The effect of wing hole geometry of the vortex generator on heat transfer and pressure drop in concentric tube type heat exchangers has been investigated in this study.For experiments, two type of hole geometrywereselected.One has four rectengular hole with 2x7mm in dimension andthe other four circular hole with 5mm in diameter andapplied for 55-65-75-90 degree blade angles. Turbulator diameter is 60 mm and includes 6 blades. Air was used as hot stream, whereas water as cold stream. Experimental results were scrutinized.Heat transfer and pressure drop werefound high with usage of circular holes geometry.
  • Küçük Resim
    Öğe
    Konsantrik tip bir ısı değiştiricisinde türbülatörlerin etkisinin sayısal incelenmesi
    (Teknolojik Araştırmalar Derneği, 2015) Budak, Nese; Yücel, H. Lütfi; Işık, Mehmet Zerakki; Oktay, Hasan
    Bu çalışmada konsantrik tip bir ısı değiştiricide iç borunun girişine yerleştirilen dört farklı tipteki türbülatörlerin ısı transferine etkisi sayısal olarak araştırılmıştır. Deliksiz ve delik konumları farklı olarak imal edilen türbülatörlerin ısı transferine etkisini araştırmak üzere aynı ve zıt yönlü paralel akış şartlarında yapılan sayısal çalışmada, sonlu hacimler metoduna dayalı bir bilgisayar programı olan ANSYS Fluent kod programı kullanılarak temel korunum denklemleri sürekli rejimde, üç boyutlu ve türbülanslı akış şartlarında çözülmüştür. Havanın farklı debi değerlerinde yapılan sayısal analiz sonuçları elde edilmiştir. Yapılan sayısal analizler sonucunda sıcaklık ve hız dağılımları verilmiştir.
  • Küçük Resim
    Öğe
    Konsantrik tip bir ısı değiştiricisinde türbülatörlerin ısı transferine etkisinin deneysel incelenmesi
    (Dicle Üniversitesi, 2013) Budak Ziyadanoğulları, Neşe; Argunhan, Zeki; Yücel, Halit Lutfi
    In this study, the effect of four different types of turbulators placed inside the pipe entrance in a concentric (nested) heat exchanger on heat transfer and pressure drop has been investigated experimentally. For this purpose, an experimental system of heat exchanger was established in which air passed through the inner tube as hot fluid whereas water passed through the outer pipe as cold fluid. Experiments have been conducted under the same and opposite directional parallel flow conditions in order to investigate the effect of turbulators that are produced as unperforated and perforated in different positions on heat transfer and pressure drop. When the research data was analysed, it became clear that maximum heat transfer happens in the inner, outer wing and body perforated turbulators.
  • Küçük Resim
    Öğe
    Experimental and numerical investigation of the effect of turbulator on heat transfer in a concentric-type heat exchanger
    (Taylor & Francis, 2015-05-21) Budak Ziyadanoğulları, Neşe; Argunhan, Zeki; Yücel, Halit Lutfi
    This article experimentally and numerically analyzes the effect of turbulators with different geometries (Type I, Type II, Type III, and Type IV) located at the inlet of the inner pipe in a concentric-type heat exchanger. Experiments were performed at parallel-flow conditions in the same and opposite directions to investigate the impact of manufactured turbulators on heat transfer and pressure drop. In the numerical study, ANSYS 12.0 Fluent code program was used, and basic protection equations were solved in the steady-state, three-dimensional, and turbulence-flow conditions. Results were obtained from numerical analysis conducted at different flow values of air (7, 8, 9, 10, 11, and 12 m3 /h). The distribution of temperature, velocity, and pressure was demonstrated as a result of numerical analyses. Experimental and numerical results were compared, and it was observed that they were in conformity with each other. When the data obtained from the analyses were examined, the highest heat transfer, pressure drop, and friction factor increase were detected to be in the Type IV turbulator.