Unsteady conjugate natural convection in a semicircular cavity with a solid shell of finite thickness filled with a hybrid water-based suspension of Al2O3 and Cu nanoparticles (hybrid nanofluid) has been analyzed numerically. The governing equations for this investigation are formulated in terms of the dimensionless stream function, vorticity, and temperature and have been solved by the finite difference method of the second-order accuracy. The effects of the dimensionless time, Rayleigh number, thermal conductivity ratio, and the nanoparticles volume fraction on the flow patterns and heat transfer have been studied. The obtained results have revealed essential heat transfer enhancement at solid–fluid interface with addition of nanoparticles. In addition, a comparison of the heat transfer enhancement level due to the suspension of various nanoparticles materials (Al2O3 and Cu) in water as regular nanofluids (Al2O3/water and Cu/water) and as a hybrid Al2O3–Cu/water nanofluid is reported.
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December 2017
Research-Article
Numerical Analysis of Unsteady Conjugate Natural Convection of Hybrid Water-Based Nanofluid in a Semicircular Cavity
Ali J. Chamkha,
Ali J. Chamkha
Mechanical Engineering Department,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia;
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia;
Prince Sultan Endowment for Energy
and Environment,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia
and Environment,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia
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Igor V. Miroshnichenko,
Igor V. Miroshnichenko
Laboratory on Convective
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
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Mikhail A. Sheremet
Mikhail A. Sheremet
Laboratory on Convective
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia;
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia;
Department of Nuclear and
Thermal Power Plants,
Tomsk Polytechnic University,
Tomsk 634050, Russia
Thermal Power Plants,
Tomsk Polytechnic University,
Tomsk 634050, Russia
Search for other works by this author on:
Ali J. Chamkha
Mechanical Engineering Department,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia;
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia;
Prince Sultan Endowment for Energy
and Environment,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia
and Environment,
Prince Mohammad Bin Fahd University,
Al-Khobar 31952, Saudi Arabia
Igor V. Miroshnichenko
Laboratory on Convective
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
Mikhail A. Sheremet
Laboratory on Convective
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia;
Heat and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia;
Department of Nuclear and
Thermal Power Plants,
Tomsk Polytechnic University,
Tomsk 634050, Russia
Thermal Power Plants,
Tomsk Polytechnic University,
Tomsk 634050, Russia
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received May 15, 2016; final manuscript received February 22, 2017; published online April 19, 2017. Assoc. Editor: Giulio Lorenzini.
J. Thermal Sci. Eng. Appl. Dec 2017, 9(4): 041004 (9 pages)
Published Online: April 19, 2017
Article history
Received:
May 15, 2016
Revised:
February 22, 2017
Citation
Chamkha, A. J., Miroshnichenko, I. V., and Sheremet, M. A. (April 19, 2017). "Numerical Analysis of Unsteady Conjugate Natural Convection of Hybrid Water-Based Nanofluid in a Semicircular Cavity." ASME. J. Thermal Sci. Eng. Appl. December 2017; 9(4): 041004. https://doi.org/10.1115/1.4036203
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