THE NUMERICAL STUDY OF HEAT TRANSFER ENHANCEMENT USING AL2O3-WATER NANOFLUID IN CORRUGATED DUCT APPLICATION

Yıl 2018, Cilt: 4 Sayı: 3, 1984 - 1997, 22.03.2018

Nehir Tokgoz

https://doi.org/10.18186/journal-of-thermal-engineering.409655

Cited By: 20

Öz

Heat transfer enhancement
in channel flow is investigated in the present study by using corrugated duct
in lieu of smooth duct. In this regard, periodic different cavities are applied
on the duct walls using the same aspect ratios. The values of the Reynolds
numbers are in the range of 10,000 ≤ Re ≤ 20,000. The effects of the
alumina-water nanofluid flow on the corrugated ducts are alternatively
investigated by using the constant nanoparticle size for further improvement of
the thermal characteristics. Computations are performed by means of finite
volume approach on three different corrugated shapes. The effects of various
parameters on the heat and fluid flow are also studied. The obtained results
have revealed that the application of corrugated duct increases the rate of
turbulent intensity on the central axis of the duct. In addition, it is found
that the rate of heat transfer changes as a result of corrugated shape and
Reynolds number. Furthermore, it is demonstrated that the application of the
alumina-water flow in such ducts enhances the rate of the heat transfer and
thermal performance when compared with the water flow. It is hoped that the
obtained results will arouse interest towards thermal design.

 

Anahtar Kelimeler

Channel Flow, Corrugated Duct, Heat Transfer Enhancement, Nanofluid

Kaynakça

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