Entropy generation analysis of fully developed turbulent convection in a twisted elliptical duct with constant heat flux

被引：1
作者：
Cheng, Junlin [1 ]
Wang, Zizhao [1 ]
Mao, Huiyi [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Energy & Power, Zhenjiang 212000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF EXERGY | 2023年 / 41卷 / 02期
关键词：
entropy generation; exergy efficiency; turbulent flow; twisted elliptical duct; constant heat flux; geometry configuration; CIRCULAR TUBE; FLOW; NANOFLUID; RESISTANCE;
D O I：
10.1504/IJEX.2023.131483
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, the entropy generation and exergy efficiency of turbulent flow through a twisted elliptical tube were investigated. The effects of the fluid properties, the aspect ratio (1.05-10.00) and the twist pitch ratio (4-200) were considered. The results indicated that the total dimensionless entropy generation increased whereas the exergy efficiency decreased as the twist pitch ratio increased. Moreover, the total dimensionless entropy generation decreased, whereas the exergy efficiency increased with an increase in the aspect ratio. The minimum total dimensionless entropy generation of 0.01 is obtained with an aspect ratio of 10.00 and a twist pitch ratio of 16.36.
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收藏
页码：131 / 141
页数：12
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