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A Comprehensive Numerical Study on Thermo-hydraulic Performance of Fluid Flow in Triangular Ducts with Delta-winglet Vortex Generators     
Yazarlar
Azize Akçayoğlu
Arş. Gör. Celal NAZLI Arş. Gör. Celal NAZLI
Kastamonu Üniversitesi, Türkiye
Özet
Triangular ducts fitted with various kinds of delta-winglet type vortex generators (VGs) are commonly used to achieve compactness and heat transfer enhancement in many industries. Successive locations of VGs on the inner surfaces of the ducts can be arranged in Common Flow Up (CFU) and Common Flow Down (CFD) orientations. In the present numerical study simultaneous effects of orientation and streamwise distance between VGs on triangular fin performance is carried out considering both global and local flow and heat transfer fields. With the configurations considered in this study, a CFD–CFU orientation and a nondimensional streamwise distance of 0.5 is determined as the best configuration. “RNG k-ϵ” turbulence model with “Enhanced wall treatment” option is determined as the best turbulence model to predict the flow fields inside the triangular duct with built-in VGs, for Reynolds number of 5000.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı HEAT TRANSFER ENGINEERING
Dergi ISSN 0145-7632
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 01-2018
Cilt No 39
Sayı 2
Sayfalar 107 / 119
Doi Numarası 10.1080/01457632.2017.1288046