Grafen Oksit (GO)-Su Nanoakışkanlı ve Kanatçıklı Birleşik Jet Akışlı Kanallarda Isı Transferinin Araştırılması

Bu çalışmada, birleşik jet akışıyla kanatçıksız ve farklı kanatçık mesafeli (N = D ve 2D) ve 60o açılı kanallarda su ve %0.02 hacimsel konsantrasyonlu GO (Grafen Oksit)-Su nanoakışkanı kullanılmasıyla yamuk ve taç desenli yüzeylerden olan ısı transferi ve performans analizi sayısal olarak incelenmiştir. Sayısal araştırma, zamandan bağımsız ve üç boyutlu, k-ε türbülans modelli Ansys-Fluent programıyla gerçekleştirilmiştir. Çalışmanın sonuçları, literatürdeki deneysel çalışmanın Nu sonuçlarıyla kıyaslanmış ve uyumlu oldukları görülmüştür. N = 2D ve Re = 15000’ de her üç yamuk ve taç desenli yüzeylerde nanoakışkanın ortalama Num sayılarının kanatçıksız ve su akışkanına göre sırasıyla %18.35 ve %24.09 daha fazla olduğu bulunmuştur.

Anahtar Kelimeler:

GO-Su nanoakışkanı, ısı transferi, çarpan jet-çapraz akışlı birleşik jet, desen, jet akışı

Investigation of Heat Transfer in Combined Jet Flow Channels With Graphene Oxide (Go)-Water Nanofluid and Fin

In this study, heat transfer from trapezoidal and crown patterned surfaces and performance analysis were investigated numerically by using water and 0.02% volumetric concentration GO (Graphene Oxide)-Water nanofluid in channels without fin and different fin distances (N = D and 2D) and 60o angle with combined jet flow. Numerical analysis was carried out steady and in three dimensions with the k-ε turbulence model Ansys-Fluent program. The outcomes of the work were matched with the Nu outcomes of the experimental work in the literature and they were discovered to be compatible. At N = 2D and Re = 15000, the average Num numbers of the nanofluid on all three trapezoidal and crown-patterned surfaces were found to be 18.35% and 24.09% higher than the without fin and water fluid, respectively.

Keywords:

GO-Water nanofluid, heat transfer, combined jet with impinging jet-cross flow, pattern, jet flow,

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