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Investigation of effects on heat transfer and flow characteristics of Cr-Ni alloy and aluminum pins placed in AISI 304 tube    
Yazarlar
Adnan Berber
Necmettin Erbakan Üniversitesi, Türkiye
Kazım Bağırsakçı
Doç. Dr. Mehmet GÜRDAL
Kastamonu Üniversitesi, Türkiye
Özet
In this study, the effects of cylindrical aluminum and Cr-Ni alloy pins placed in different arrangements on the inner wall of the pipe in the turbulent flow, the effects of heat transfer and flow characteristics on different Reynolds numbers have been experimentally investigated. The experiments were carried out under forced flow and constant heat flow conditions. Air is preferred as the fluid and the fluid velocity is adjusted between Re 10000 and 50000. It has been observed that the Nusselt values obtained over the number of Re for the 5 different test tubes are arranged in a line from large to small, sequential row aluminum pin, sequential row Cr-Ni alloy pin, diagonal row aluminum pin, diagonal row Cr-Ni alloy pin, plain tube. There are also CFD analysis for each material, arrangements and pins geometry sets. On the other hand, it was determined that friction coefficient is directly proportional to the increase of heat transfer coefficient. As a result, it is observed that experimental results are compatible with both literature and numerical study.
Anahtar Kelimeler
convection heat transfer,heat transfer enhancement,aluminum and Cr-Ni pins,turbulent flow in tube,friction and pressure losses in channels
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Thermal Science
Dergi ISSN 0354-9836
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q4
Makale Dili İngilizce
Basım Tarihi 01-2020
Cilt No 24
Sayfalar 306 / 306
Doi Numarası 10.2298/TSCI180421306B
Makale Linki http://www.doiserbia.nb.rs/Article.aspx?id=0354-98361800306B#.X-2wMNgzbIU