Unsteady natural convection and statistical analysis in a CNT-water filled cavity with non-isothermal heating

Journal article

Rahman, Mahmudur M., Öztop, Hakan F., Steele, Michael Craig, Naim, Abdul Ghani, Al-Salem, Khaled and Ibrahim, Talaat A.. (2015). Unsteady natural convection and statistical analysis in a CNT-water filled cavity with non-isothermal heating. International Communications in Heat and Mass Transfer. 64, pp. 50 - 60. https://doi.org/10.1016/j.icheatmasstransfer.2015.02.012
AuthorsRahman, Mahmudur M., Öztop, Hakan F., Steele, Michael Craig, Naim, Abdul Ghani, Al-Salem, Khaled and Ibrahim, Talaat A.
Abstract

A computational study has been done in this work to investigate the effects of CNT–water nanofluids in a cavity with non-isothermal heating for higher Rayleigh numbers. The cavity is heated non-isothermally from the bottom wall, it is cooled from the top and vertical walls are adiabatic. Unsteady governing equations of heat and fluid flow are solved via finite element method for different parameters as Ra and ϕ. A correlation analysis shows that, when controlling for ϕ and τ there was a significant correlation between Ra and Num. When controlling for Ra and ϕ there was a negative significant correlation between τ and Num. It is also found that there is an optimum value for nanofluid volume fraction to control heat transfer, temperature distribution and flow field.

Keywordscarbon nanotube; non-isothermal heating; natural convection; finite element; correlation analysis
Year2015
JournalInternational Communications in Heat and Mass Transfer
Journal citation64, pp. 50 - 60
PublisherPergamon Press
ISSN0735-1933
Digital Object Identifier (DOI)https://doi.org/10.1016/j.icheatmasstransfer.2015.02.012
Page range50 - 60
Research GroupSchool of Allied Health
Publisher's version
File Access Level
Controlled
Place of publicationUnited Kingdom
EditorsW. Minkowycz
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