三角形封闭腔内内含旋转柱体时碳化硅-乙二醇纳米流体层流混合对流传热特性研究

Saved in:
Bibliographic Details
Published in浙江大学学报：A卷英文版 Vol. 16; no. 6; pp. 478 - 490
Main Author Yu-fei WANG Xu XU Tian TIAN Li-wu FAN Wen-long WANG Zi-tao YU
Format Journal Article
LanguageEnglish
Published 2015
Subjects
SiC—EG纳米流体
三角封闭腔
旋转
柱体
混合对流
瑞利数
Online AccessGet full text

Cover

More Information
Bibliography:A numerical study has been carried out for a laminar steady mixed convection flow in a 2D triangular enclosure with an inner rotating coaxial cylinder, with the enclosure filled with ethylene glycol-silicon carbide （SiC-EG）. The thermal conductivity and viscosity of the SiC-EG nanofluids were experimentally determined by using a Decagon Devices KD2 Pro thermal property meter and a rotational Brookfleld viscometer, respectively. rotation velocity, solid volume fraction, dimensionless radius of the Various pertinent parameters, such as the dimensionless inner cylinder, and Rayleigh numbers, were analyzed to determine their influences on heat transfer and fluid flow. Results clearly show how the direction of rotation of the cylinder affects the thermal performance in a triangular enclosure. It is found that the average Nusselt number increases with rise in the Rayleigh number or as more nanoparticles are added to the base liquid. It was also observed that at constant Rayleigh number, different rotational conditions have remarkable effects on the flow and heat transfer characteristics.
33-1236/O4
Ethylene glycol-silicon carbide （SiC-EG） nanofluids, Mixed convection, Triangular enclosure, Rotating cylinder, Rayleigh number
ISSN:1673-565X
1862-1775