Effect of oxides nanoparticle materials on the pressure loss and heat transfer of nanofluids in circular pipes

被引：19

作者：

Balla, Hyder H. ^{[1
]}

Abdullah, Shahrir ^{[1
]}

Zulkifli, Rozli ^{[1
]}

Faizal, Wan Mohd ^{[1
]}

Sopian, Kamaruzaman ^{[1
]}

机构：

[1] Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

来源：

Journal of Applied Sciences | 2012年 / 12卷 / 13期

关键词：

Copper oxides - Aluminum oxide - Nanoparticles - Shear flow - Thermodynamic properties - Alumina - Heat flux - Laminar flow - Heat transfer - Nanofluidics - Reynolds number - Shear stress;

D O I：

10.3923/jas.2012.1396.1401

中图分类号：

学科分类号：

摘要：

Laminar flow and heat transfer of different nanofluids pdcles in water, namely Al2O3, CuO and TiO2, flowing through a circular tube under comtant heat flux condtions have been numerically analyzed. The investigation was performed for nanoparticles of size 100 nm. The numerical results obtained are compared with existing well-established correlations. The predction for the Nusselt number for nanofluids agrees well with the Pak-Choi correlation. The thermophysical properties of the nanofluids are estimated by using the equations available in literature. Comparison of convective heat tramfer coefficients for Al2O3, CuO and TiO2, based nanofluids are presented. It is found that pressure loss increases with the particle volume concentration. However, the flow demonstrates enhancement in heat tramfer which becomes better with the increase in the Reynolds number of the flow, but is accompanied with an increase in shear stress. © 2012 Asian Network for Scientific Information.

引用

页码：1396 / 1401