A Numerical Analysis of Fluid Flow and Heat Transfer Characteristics of ZnO-Ethylene Glycol Nanofluid in Rectangular Microchannels
Küçük Resim Yok
Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Assoc Mechanical Engineers Technicians Slovenia
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The fluid flow and heat transfer characteristics of ZnO-Ethylene glycol (EG) nanofluid through rectangular microchannels having different aspect ratios (a is 1 to 2) are numerically investigated. The different nanoparticle volume percentages (phi is 1 % to 4 %) of ZnO-EG nanofluid are used. The flow is considered under single-phase, three-dimensional, steady-state, incompressible, thermally developing, laminar flow conditions. As a result, the microchannel with an aspect ratio value of 1 has the highest convection heat transfer coefficient and the lowest pressure drop. It is also observed that the convection heat transfer coefficient and pressure drop increases with an increase in nanoparticle volume fraction value of nanofluid. However, the Nusselt number decreases with increasing nanoparticle volume fraction, while the Darcy friction factor is not affected.
Açıklama
Anahtar Kelimeler
convection heat transfer, pressure drop, rectangular microchannel, ZnO-EG nanofluid
Kaynak
Strojniski Vestnik-Journal of Mechanical Engineering
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
62
Sayı
10