Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, 等. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. 中国化学工程学报(英文版), 2015,23(8):1266-1274.
Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, Seyed Gholamreza Etemad. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. Chin.J.Chem.Eng., 2015, 23(8): 1266-1274.
Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, 等. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. 中国化学工程学报(英文版), 2015,23(8):1266-1274.DOI: 10.1016/j.cjche.2015.04.002.
Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, Seyed Gholamreza Etemad. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. Chin.J.Chem.Eng., 2015, 23(8): 1266-1274.DOI: 10.1016/j.cjche.2015.04.002.
Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure
摘要
Abstract
This study characterizes and optimizes natural convection heat transfer of two Newtonian Al
2
O
3
and TiO
2
/water nanofluids in a cylindrical enclosure. Nusselt number (Nu) of nanofluids in relation to Rayleigh number (Ra) for different concentrations of nanofluids is investigated at different configurations and orientations of the enclosure. Results show that adding nanoparticles towater has a negligible or even adverse influence upon natural convection heat transfer of water: only a slight increase in natural convection heat transfer of Al
2
O
3
/water is observed
while natural convection heat transfer for TiO
2
/water nanofluid is inferior to that for the base fluid. Results also reveal that at low Ra
the likelihood of enhancement in natural convection heat transfer ismore than at high Ra: at low Ra
inclination angle
aspect ratio of the enclosure and nanoparticle concentration influence natural convection heat transfer more pronouncedly than that in high Ra.
关键词
Keywords
references
The trial reading is over, you can activate your VIP account to continue reading.