Kherbeet, A. S. and Mohammed, H. A. and Ahmed, H. E. and Salman, B. H. and Alawi, O. A. and Safaei, M. R. and Khazaal, M. T. (2016) Mixed convection nanofluid flow over microscale forward-facing step — effect of inclination and step heights. International Communications in Heat and Mass Transfer, 78 . pp. 145-154. ISSN 0735-1933 (In Press)
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Abstract
A numerical study of nanofluid flow and heat transfer of laminar mixed convection flow over a three-dimensional, horizontal microscale forward-facing step (MFFS) is reported. The effects of different step heights and the duct inclination angle on the heat transfer and fluid flow are discussed in this study. The straight and downstream walls were heated to a constant temperature and uniform heat flux respectively. The numerical results were carried out for step heights of 350 μm, 450 μm, 550 μm and 650 μm. Different inclination angles were considered to determine their effects on the flow and heat transfer. Ethylene glycol-SiO2 nanofluid is considered with a 25 nm particle diameter and 4% volume fraction. The results reveal that the Nusselt increases as the step heights increase. Additionally, no significant effect of the duct inclination angle is found on the heat transfer rate and the fluid flow.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Ducts, Ethylene, Ethylene glycol, Facings, Flow of fluids, Heat convection, Heat flux, Mixed convection, Nanofluidics, Nanoparticles, Constant temperature, Flow and heat transfer, Heat transfer and fluid flow, Heat Transfer enhancement, Heat transfer rate, Microscale forward facing step, Mixed convection flow, Nanofluids, Heat transfer |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Mechanical Engineering |
| ID Code: | 71786 |
| Deposited By: | Fazli Masari |
| Deposited On: | 15 Nov 2017 03:02 |
| Last Modified: | 15 Nov 2017 03:02 |
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