numerical comparison of viscosity models on mixed convection in double lid-driven cavity utilized cuo-water nanofluid
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ID: 131435
2016
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Abstract
Laminar incompressible mixed-convective heat transfer in two-dimensional
lid-driven cavity, filled with nanofluid CuO-water, is studied numerically.
Eight different viscosity models are compared to investigate the enhancement
in the heat transfer and the increase in the average Nusselt number. The
point of view of each model essentially differs in terms of whether it takes
various parameters such as temperature effects, Brownian motion of the
nanoparticles, the radii of aggregated particles, and the volume-fraction of
nanoparticles into account or not. The governing stream-vorticity equations
are solved using a second order central finite difference scheme, coupled to
the conservation of mass and energy. The main sensitive parameters of
interest to investigate the viscosity models are chosen as volume fraction of
the nanoparticles φ, and Richardson number Ri. The performance study of the
viscosity models and the interpretation of the corresponding results of
velocity components are done in a different range of φ and Ri.
| Reference Key |
nader2016thermalnumerical
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|---|---|
| Authors | ;Pourmahmoud Nader;Ghafouri Ashkan;Mirzaee Iraj |
| Journal | Nature |
| Year | 2016 |
| DOI |
10.2298/TSCI130309048P
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| URL | |
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