非均匀加热条件下内插扭带管强化传热模拟分析

doi:10.16568/j.0254-6086.202102012

核聚变与等离子体物理 ›› 2021, Vol. 41 ›› Issue (2): 167-173.DOI: 10.16568/j.0254-6086.202102012

非均匀加热条件下内插扭带管强化传热模拟分析

刘萍，丁文龙，靳海波

(安徽理工大学机械工程学院，淮南 232001)

收稿日期:2019-09-09 修回日期:2020-09-17 出版日期:2021-06-15 发布日期:2021-06-24
作者简介:刘萍(1978-)，女，江苏盐城人，教授，主要从事强化传热学研究。
基金资助:
国家自然科学基金(11805005)

Simulation analysis of enhanced heat transfer of tube with twisted tape inserts under non-uniform heating

LIU Ping, DING Wen-long, JIN Hai-bo

(School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001)

Received:2019-09-09 Revised:2020-09-17 Online:2021-06-15 Published:2021-06-24

摘要/Abstract

摘要： 以水为工作介质，采用欧拉多相流模型和非平衡沸腾模型，当流速在0.3~0.7m·s^-1范围内、工作压力为4.5MPa、热流密度为2MW·m^-2时，数值模拟了内插扭带管和光管管内流动过冷沸腾传热。对比了两种管道的换热系数、气泡份额、流动速度、流场流线、固体组件温度和压降，分析了内插扭带管的综合性能。结果表明，与光管相比较，内插扭带管的换热系数提高约6%~90%，压降增大约200%~250%，得到流速在0.4~0.6m·s^-1范围内时内插扭带管的综合性能评价因子η为1.1~1.3。

关键词: 内插扭带管, 光管, 强化传热, 数值模拟

Abstract: When water is set as the working medium, the Euler multiphase flow model and non-equilibrium boiling model are adopted, the flow velocity is in the range of 0.3~0.7m·s^-1, the working pressure is 4.5MPa, and the heat flux density is 2MW·m^-2, the subcooled boiling heat transfer in the tube with twisted tape inserts and plain tube has been simulated numerically. The heat transfer coefficient, void fraction, flow velocity, flow field streamline, solid component temperature and pressure drop of two kinds of tubes were compared, and the comprehensive performance of the tube with twisted tape inserts has been analyzed. The results show that the heat transfer coefficient of the tube with twisted tape inserts increases by 6% to 90% or so, and the pressure drop increases by about 200% to 250%, compared with the plain tube. When the flow velocity is in the range of 0.4~0.6m·s^-1, the comprehensive performance evaluation factor η of the tube with twisted tape insert is 1.1~1.3.

Key words: Tube with twisted tape inserts, Plain tube, Enhance heat transfer, Numerical simulation

中图分类号:

O532+.2

刘萍，丁文龙，靳海波. 非均匀加热条件下内插扭带管强化传热模拟分析[J]. 核聚变与等离子体物理, 2021, 41(2): 167-173.

LIU Ping, DING Wen-long, JIN Hai-bo. Simulation analysis of enhanced heat transfer of tube with twisted tape inserts under non-uniform heating[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2021, 41(2): 167-173.

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非均匀加热条件下内插扭带管强化传热模拟分析

Simulation analysis of enhanced heat transfer of tube with twisted tape inserts under non-uniform heating

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