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个人信息Personal Information
教授
硕士生导师
性别:男
毕业院校:山口大学
学位:博士
所在单位:力学与航空航天学院
学科:流体力学. 化学工程
办公地点:大连本部 力学楼510
盘锦校区 D07-306B
联系方式:1.大连理工大学运载工程与力学学部力学系流体力学研究室 2.大连理工大学盘锦校区海洋科学与技术学院 Mobile:18641136292 Office: 0411-84707330 Home: 0411-84748119
电子邮箱:ybian@dlut.edu.cn
Numerical and experimental analysis of heat transfer enhancement and pressure drop characteristics of laminar pulsatile flow in grooved channel with different groove lengths
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论文类型:期刊论文
发表时间:2018-06-05
发表刊物:APPLIED THERMAL ENGINEERING
收录刊物:SCIE、EI
卷号:137
页面范围:632-643
ISSN号:1359-4311
关键字:Grooved channel; Pulsatile flow; Heat transfer; Pressure drop; Oscillatory fraction
摘要:Heat transfer enhancement and pressure drop characteristics of laminar pulsatile flow in grooved channel with different grooved lengths are investigated numerically and experimentally in the present work. The Reynolds number of the mainstream flow considered in this work ranges from 300 to 525. Two dimensional simulations are carried out to reveal the flow and heat transfer features. The numerical results demonstrate that heat transfer is enhanced in the grooved channel when the pulsatile flow is at high oscillatory fraction and a moderate frequency. It is also found that the heat transfer is improved the most in the grooved channel of l = 1.6, which is by approximately 4.74% at a Reynolds number of 300. Furthermore, five types of grooved channels are tested in experiment where the pressure drop is measured by an electro-magnetic flow-meter. The sampling data of pressure drop is analyzed by the amplitude and mean value. Both the numerical and experimental results indicate that the grooved channel of l = 1.6 performs better in terms of heat transfer enhancement while the amplitude of pressure drop and mean pressure drop in l = 1.6 are relatively lower than other grooved channels studied. Meanwhile, it is revealed that the heat transfer improves with the oscillatory fraction at low oscillatory frequency.