Nanoparticle shape effect on the natural-convection heat transfer of hybrid nanofluid inside a U-shaped enclosure

Thermal Science

Siri Zailan¹  Asmadi Muhammad Solleh¹  Kasmani Ruhaila Md.²  Saleh Habibis³ 

[1] Institute of Mathematical Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia;Mathematics Division, Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur, Malaysia;Mathematics Education Department, Universitas Islam Negeri Sultan Syarif Kasim, Pekanbaru, Indonesia;

关键词: natural-convection;    hybrid nanofluid;    nanoparticle shape;    u-shaped enclosure;    heat transfer;   

DOI  :  10.2298/TSCI200818139A

来源: DOAJ

【 摘 要 】

The effect of nanoparticle shape on the natural-convection heat transfer of Cu-Al2O3-water hybrid nanofluid inside a U-shaped enclosure is presented in this paper. The governing equations are transformed into the dimensionless form using dimensionless variables. A three-node triangular finite element method is used with the Newton-Raphson method to solve the problem numerically. The streamlines and isotherms as well as the local and average Nusselt numbers are presented for the fluid-flow with Rayleigh number of 104 to 106. It is found that blade nanoparticle shape produces the highest heat transfer rate while sphere is the lowest.

【 授权许可】

Unknown