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http://hdl.handle.net/11452/29510
Başlık: | Experimental aspects of heat transfer enhancement over various flow surfaces |
Yazarlar: | Uludağ Üniversitesi/Mühendislik Fakültesi/Makine Mühendisliği Bölümü. Yemenici, Onur Umur, Habib 36676656200 6602945164 |
Anahtar kelimeler: | Thermodynamics Engineering Mechanics Turbulent-flow Pressure-gradients Channels Convection Straight Blocks Arrays Ribs Anemometers Heat transfer coefficients Reynolds number Thermocouples Wind tunnels Concave surface Convex surfaces Experimental aspects Heat transfer augmentation Heat transfer enhancement Hot wire anemometers Ribbed surfaces Turbulent intensities Turbulent flow |
Yayın Tarihi: | 23-Mar-2016 |
Yayıncı: | Taylor & Francis |
Atıf: | Yemenici, O. ve Umur, H. (2016). "Experimental aspects of heat transfer enhancement over various flow surfaces". Heat Transfer Engineering, 37(5), 435-442. |
Özet: | The heat transfer enhancement was experimentally investigated over the flat, concave, convex, and ribbed surfaces in a wind tunnel with the initial streamwise distance Reynolds number range of 4.0 x 10(5)-4.5 x 10(6) encompassing laminar, transitional, and turbulent flows. The velocity and turbulent intensities were measured by a constant-temperature hot-wire anemometer and temperatures by copper-constantan thermocouples. The results showed that the concave surface caused heat transfer to increase up to 55% in laminar, 30% in transitional, and 20% in turbulent flows, whereas the convex surface brought about heat transfer decreasing by 25% in laminar, 20% in transitional, and 15% in turbulent flows with respect to those of the flat plate. On the other hand, the ribbed surface with the same heated area caused much more heat transfer augmentation above the flat surface: 160% in laminar and 120% in turbulent flows. |
URI: | https://doi.org/10.1080/01457632.2015.1057449 https://www.tandfonline.com/doi/full/10.1080/01457632.2015.1057449 http://hdl.handle.net/11452/29510 |
ISSN: | 0145-7632 1521-0537 |
Koleksiyonlarda Görünür: | Scopus Web of Science |
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