Natural convection of a water-based nanofluid in a partially open triangular cavity with a local heat source of constant temperature under the effect of Brownian diffusion and thermophoresis has been analyzed numerically. Governing equations formulated in dimensionless stream function and vorticity variables on the basis of two-phase nanofluid model with corresponding initial and boundary conditions have been solved by finite difference method. Detailed study of the effect of Rayleigh number, buoyancy-ratio parameter, and local heater location on fluid flow and heat transfer has been carried out. It has been revealed that an increase in the buoyancy force magnitude leads to homogenization of nanoparticles distribution inside the cavity. A growth of a distance between the heater and the cavity corner illustrates the heat transfer enhancement.
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Free Convection in an Open Triangular Cavity Filled With a Nanofluid Under the Effects of Brownian Diffusion, Thermophoresis and Local Heater
Nadezhda S. Bondareva,
Nadezhda S. Bondareva
Laboratory on Convective Heat
and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
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;
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
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Hakan F. Oztop,
Hakan F. Oztop
Department of Mechanical Engineering,
Technology Faculty,
Fırat University,
Elazig 23119, Turkey;
Technology Faculty,
Fırat University,
Elazig 23119, Turkey;
Department of Mechanical Engineering,
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
e-mail: hfoztop1@gmail.com
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
e-mail: hfoztop1@gmail.com
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Nidal Abu-Hamdeh
Nidal Abu-Hamdeh
Department of Mechanical Engineering,
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
Search for other works by this author on:
Nadezhda S. Bondareva
Laboratory on Convective Heat
and Mass Transfer,
Tomsk State University,
Tomsk 634050, Russia
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;
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
Hakan F. Oztop
Department of Mechanical Engineering,
Technology Faculty,
Fırat University,
Elazig 23119, Turkey;
Technology Faculty,
Fırat University,
Elazig 23119, Turkey;
Department of Mechanical Engineering,
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
e-mail: hfoztop1@gmail.com
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
e-mail: hfoztop1@gmail.com
Nidal Abu-Hamdeh
Department of Mechanical Engineering,
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
King Abdulaziz University,
Jeddah 21589, Saudi Arabia
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received September 30, 2016; final manuscript received August 18, 2017; published online December 19, 2017. Assoc. Editor: Antonio Barletta.
J. Heat Transfer. Apr 2018, 140(4): 042502 (12 pages)
Published Online: December 19, 2017
Article history
Received:
September 30, 2016
Revised:
August 18, 2017
Citation
Bondareva, N. S., Sheremet, M. A., Oztop, H. F., and Abu-Hamdeh, N. (December 19, 2017). "Free Convection in an Open Triangular Cavity Filled With a Nanofluid Under the Effects of Brownian Diffusion, Thermophoresis and Local Heater." ASME. J. Heat Transfer. April 2018; 140(4): 042502. https://doi.org/10.1115/1.4038192
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