Natural Convection of Water-Based CuO Nanofluids in a Cylindrical Enclosure

Buoyancy driven heat transfer of nanofluids in a cylindrical enclosure used as a control unit in the subsea hydrocarbon injection wells is investigated in this study. The governing equations obtained with the Boussinesq approximation are solved using Comsol Multiphysics finite element analysis and simulation software. The base fluid is water and CuO is used as nanoparticles. Solution is obtained for nanoparticle solid volume fraction of 8% and for Rayleigh number in the range of 105-107. The results show that nanoparticle usage in the cylindrical electronic control unit has a significant effect on the flow and heat transfer.




References:
[1] J. A. Eastman, S. U. S. Choi, W.Yu, and L. J. Thompson, "Anomalously
increased effective thermal conductivity of ethylene glycol-based
nanofluids containing copper nanoparticles," Applied Physical Letters,
vol. 78, pp. 718-720, 2001.
[2] S. U. S. Choi, Z. G. Zhang, W. Yu, F. E. Lockwood, and E. A. Grulke,
"Anomalous thermal conductivity enhancement in nanotube
suspension," Applied Physical Letters, vol. 79, pp. 2252-2254, 2001.
[3] Y. Xuan, and Q. Li, "Heat transfer enhancement of nanofluids," Int. J.
Heat Fluid Flow, vol. 21, pp. 58-64, 2000.
[4] P. Keblinski, S. R. Phillpot, S. U. S. Choi, and J. A. Eastman,
"Mechanisms of heat flow in suspensions of nano-sized particles
nanofluids," Int. J. Heat Mass Transfer, vol. 45, pp. 855-863, 2002.
[5] W. Yu, and S. U. S. Choi, "The role of interfacial layers in the enhanced
thermal conductivity of nanofluids: A renovated Maxwell model," J.
Nanoparticle Research, vol. 5, pp. 167-171, 2003.
[6] Y. Xuan, Q. Li, Y. Xuan,, and Q. Li, "Experimental Research on the
Viscosity of Nanofluids," Report of Nanjing University of Science and
Technology, 1999.