| 纵向涡发生器对强化传热的影响 |
| |
| 引用本文： | 赵洁,杨历,丁京伟,齐承英. 纵向涡发生器对强化传热的影响[J]. 河北工业大学学报, 2012, 41(1): 61-65 |
| |
| 作者姓名： | 赵洁 杨历 丁京伟 齐承英 |
| |
| 作者单位： | 1. 河北工业大学能源与环境工程学院,天津,300401
2. 中国汽车技术研究中心汽车试验研究所,天津,300162 |
| |
| 摘 要： | 纵向涡发生器可以产生纵向涡,而纵向涡可以影响流体的结构,进而可以影响它们的传热过程.通过使用FLUENT计算软件和粒子图像测试仪(PIV),采用数值模拟和实验来研究布置一种新型纵向涡发生器的流场的非定常流动特性及它对槽道的传热的影响.新型涡流发生器为高宽比为0.5的斜截椭圆柱体.数值计算所用的湍流模型为大涡模拟.将数值模拟和PIV实验结果进行比较,两者的涡量场等极为相似,证明数值模拟的计算准确性.模拟和实验表明:高宽比为0.5的斜截椭圆柱体可以产生纵向涡,可以提高槽道的对流换热系数,起到强化传热的作用.
|
| 关 键 词： | 涡流发生器 纵向涡 强化传热 PIV 数值模拟 |
The effect of heat transfer enhancement and drag reduction by using vortex generator |
| |
| ZHAO Jie , YANG Li , DING Jing-wei , QI Cheng-ying. The effect of heat transfer enhancement and drag reduction by using vortex generator[J]. Journal of Hebei University of Technology, 2012, 41(1): 61-65 |
| |
| Authors: | ZHAO Jie YANG Li DING Jing-wei QI Cheng-ying |
| |
| Affiliation: | 1(1.School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China;2.The Research Center of Automotive Technology of China,Automotive Research and Testing Center,Tianjin 300162,China) |
| |
| Abstract: | Longitudinal vortex generators can produce longitudinal vortices and affect the structure of the fluid,in turn,can affect their heat transfer process.The flow field and heat transfer in a rectangle channel with periodic vortex generators are obtained using the hydromechanics software FLUENT and the particle image velocimetry(PIV).The aspect ratio of vortex generators is 0.5.The turbulence model is large eddy simulation(LES).Comparing with the result of PIV,the vorticity of the Fluent software is similar,so the simulation result of Fluent is accurate.the results show that:vortex generators can generate the longitudinal vortex,enhance heat transfer coefficient,so it can enhance heat transfer. |
| |
| Keywords: | vortex generator streamwise vortexs heat transfer enhancement PIV numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
