A numerical analysis of fluid flow and heat transfer characteristics of ZnO-Ethylene glycol nanofluid in rectangular microchannels
Strojniski Vestnik/Journal of Mechanical Engineering, cilt.62, sa.10, ss.603-613, 2016 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 62 Sayı: 10
- Basım Tarihi: 2016
- Doi Numarası: 10.5545/sv-jme.2015.3170
- Dergi Adı: Strojniski Vestnik/Journal of Mechanical Engineering
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.603-613
- Anahtar Kelimeler: Convection heat transfer, Pressure drop, Rectangular microchannel, ZnO-EG nanofluid
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır
Özet
The fluid flow and heat transfer characteristics of ZnO-Ethylene glycol (EG) nanofluid through rectangular microchannels having different aspect ratios (α is 1 to 2) are numerically investigated. The different nanoparticle volume percentages (φ 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.