Abstract
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.
| Original language | English |
|---|---|
| Article number | 042502 |
| Journal | Journal of Heat Transfer |
| Volume | 140 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Apr 2018 |
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Keywords
- Brownian diffusion
- free convection
- local heater
- nanofluid
- partially open triangular cavity
- thermophoresis
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Free Convection in an Open Triangular Cavity Filled with a Nanofluid under the Effects of Brownian Diffusion, Thermophoresis and Local Heater. / Bondareva, Nadezhda S.; Sheremet, Mikhail A.; Oztop, Hakan F.; Abu-Hamdeh, Nidal.
In: Journal of Heat Transfer, Vol. 140, No. 4, 042502, 01.04.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Free Convection in an Open Triangular Cavity Filled with a Nanofluid under the Effects of Brownian Diffusion, Thermophoresis and Local Heater
AU - Bondareva, Nadezhda S.
AU - Sheremet, Mikhail A.
AU - Oztop, Hakan F.
AU - Abu-Hamdeh, Nidal
PY - 2018/4/1
Y1 - 2018/4/1
N2 - 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.
AB - 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.
KW - Brownian diffusion
KW - free convection
KW - local heater
KW - nanofluid
KW - partially open triangular cavity
KW - thermophoresis
UR - http://www.scopus.com/inward/record.url?scp=85039150013&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85039150013&partnerID=8YFLogxK
U2 - 10.1115/1.4038192
DO - 10.1115/1.4038192
M3 - Article
VL - 140
JO - Journal of Heat Transfer
JF - Journal of Heat Transfer
SN - 0022-1481
IS - 4
M1 - 042502
ER -