Analysis of the effect of baffles on vibration and heat transfer characteristics of elastic tube bundles

被引：13

作者：

Ji, Jiadong ^{[1
]}

Li, Feiyang ^{[2
]}

Shi, Baojun ^{[3
]}

Chen, Qinghua ^{[4
]}

机构：

[1] Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China

[2] Anhui Univ Sci & Technol, Sch Artificial Intelligence, Huainan 232001, Peoples R China

[3] Hebei Univ Technol, Sch Artificial Intelligence, Tianjin 300401, Peoples R China

[4] Sch Mech Engn, Anhui Key Lab Mine Intelligent Equipment & Technol, Huainan 232001, Peoples R China

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 2022年 / 136卷

基金：

中国国家自然科学基金;

关键词：

Numerical simulation; Flow-induced vibration; Vibration-enhanced heat transfer; Fluid-structure interaction; FLOW-INDUCED VIBRATION; TRANSFER ENHANCEMENT; NUMERICAL-ANALYSIS; PERFORMANCE; SHELL; EXCHANGERS;

D O I：

10.1016/j.icheatmasstransfer.2022.106206

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

For improving the performance of heat exchangers by effectively utilizing the flow-induced vibration, a presence baffle elastic tube bundle heat exchanger, is proposed according to the absence baffle elastic tube bundle heat exchanger. Heat transfer and vibration characteristics of them at different velocities, using flow-solid coupling calculation, are studied and compared. The results show that baffle can improve flow uniformity of shell-side fluid and fully excites the elastic tube bundle vibration to improve its heat transfer performance. When inlet velocity becomes 1.0 m/s from 0.7 m/s, the maximum amplitude of two monitoring points on elastic tube bundle increased by 25.40% and 25.92% for absence baffle elastic tube bundle heat exchanger and by 42.44% and 42.97% for presence baffle elastic tube bundle heat exchanger; in non-vibration and vibration conditions, average heat transfer coefficient of the elastic tube bundle increased by 32.46% and 30.48% for absence baffle elastic tube bundle heat exchanger and by 31.16% and 31.36% for presence baffle elastic tube bundle heat exchanger. Compared to absence baffle elastic tube bundle heat exchanger, heat transfer performance and vibration-enhanced heat transfer of presence baffle elastic tube bundle heat exchanger are generally improved. And at low flow velocities, the improvement is more significant.

引用

页数：12