期刊
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
卷 39, 期 10, 页码 1425-1436出版社
SHANGHAI UNIV
DOI: 10.1007/s10483-018-2377-7
关键词
wavy cavity; natural convection; Al2O3-water nanofluid; non-uniform heating; numerical result
资金
- UEFISCDI, Romania [PN-III-P4-ID-PCE-2016-0036]
The present study is devoted to numerical analysis of natural convective heat transfer and fluid flow of alumina-water nanofluid in an inclined wavy-walled cavity under the effect of non-uniform heating. A single-phase nanofluid model with experimental correlations for the nanofluid viscosity and thermal conductivity has been included in the mathematical model. The considered governing equations formulated in dimensionless stream function, vorticity, and temperature have been solved by the finite difference method. The cavity inclination angle and irregular walls (wavy and undulation numbers) are very good control parameters for the heat transfer and fluid flow. Nowadays, optimal parameters are necessary for the heat transfer enhancement in different practical applications. The effects of the involved parameters on the streamlines and isotherms as well as on the average Nusselt number and nanofluid flow rate have been analyzed. It has been found that the heat transfer rate and fluid flow rate are non-monotonic functions of the cavity inclination angle and undulation number.
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