Flow-induced oscillation of membrane tapes and its effect on heat transfer of a transitional pipe flow
Flow-induced oscillation of membrane tapes and its effect on heat transfer of a transitional pipe flow
复制标题
膜带的流激振荡及其对过渡管流传热的影响
DOI：
10.1016/j.ijheatmasstransfer.2021.121128
复制
发表时间：
2021-06
影响因子：
5.2
通讯作者：
Tian Maocheng
中科院分区：
文献类型：
--
作者：
Qu Xiaohang;Tian Maocheng
流动诱导振荡是一种有效的强化传热方式，其优点是不需要额外的能源消耗，并且具有更好的防止结垢或烟灰形成的性能。在本研究中，长度、宽度和厚度分别为90毫米、3.8毫米和13.3微米的薄膜胶带安装在内径为13毫米的水平管道内。通过目视测量，证明胶带能够在气流内振荡，并且发现振荡频率随着流速而增加。通过电加热对管壁施加恒定的热通量，并通过热电偶获得管壁温度。在低雷诺数湍流区域（Re介于1800和4200之间），平均传热系数和流动阻力分别是光滑管的1.3-1.7倍和1.6-2.1倍。然而，强化传热效果在Re较低时最明显，随着Re的增加，这种效果变弱。尽管如此，自发振荡带可能是一种非常有前途的传热强化元件。本研究是一项初步的研究尝试，不同尺寸膜带的流致振荡以及多个膜带的使用还有待深入研究。
Flow-induced oscillation is an effective way for heat transfer enhancement, which embraces the advantages of requiring no extra energy consumption and better performance for preventing fouling or soot formation. In the present study, a thin membrane tape with length, width and thickness of 90 mm, 3.8 mm and 13.3 um respectively was mounted inside a horizontal pipe with an internal diameter of 13 mm. By visual measurement, the tape was demonstrated to be able to oscillate within airflow and the oscillation frequency was found to increase with the flow rate. Constant heat flux was applied at the pipe wall through electrical heating and the wall temperature was obtained by thermocouples. In low Reynolds number turbulent region (Rebetween 1800 and 4200), the mean heat transfer coefficient and flow resistance were found to be 1.3-1.7 times and 1.6-2.1 times than that of a smooth tube, respectively. However, the heat transfer enhancement effect is most pronounced at lowerReand as theReincreases, this effect becomes weak. Nevertheless, the spontaneous oscillating tapes can be a very promising heat transfer intensification element. This study is a primary investigation attempt and flow-induced oscillations of membrane tapes of different dimensions and the use of multiple membrane tapes are awaited to be studied deeply.
登录
查看更多内容
换热器壳程流激振动及弹性管束传热特性数值分析
影响因子：
6.4
作者：
Ji, Jiadong;Ge, Peiqi;Bi, Wenbo
通讯作者：
Bi, Wenbo
换热器流激振动平面弹性管束传热性能数值研究
DOI：
10.1016/j.ijheatmasstransfer.2016.07.107
发表时间：
2016-12
影响因子：
5.2
作者：
Derong Duan;Peiqi Ge;Wenbo Bi
通讯作者：
Wenbo Bi
影响因子：
15.9
作者：
Ji Zhang;Xiaowei Zhu;M. Mondejar;F. Haglind
通讯作者：
Ji Zhang;Xiaowei Zhu;M. Mondejar;F. Haglind
影响因子：
2.4
作者：
Tian Mao
通讯作者：
Tian Mao
新型波纹管的传热和流体动力学分析
影响因子：
3.2
作者：
Wang, Yu;He, Ya-Ling;Zhang, Jie;Lei, Yong-Gang
通讯作者：
Lei, Yong-Gang