| 典型微管道流场数值模拟与Micro-PIV检测研究 |
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| 引用本文： | 谢海波,傅新,杨华勇,陈虹.典型微管道流场数值模拟与Micro-PIV检测研究[J].机械工程学报,2006,42(5):32-38. |
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| 作者姓名： | 谢海波 傅新 杨华勇 陈虹 |
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| 作者单位： | 浙江大学流体传动及控制国家重点实验室,杭州,310027 |
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| 基金项目： | 中国科学院资助项目;广东省博士启动基金 |
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| 摘 要： | 针对微流体器件中几种典型微管道进行了理论与试验研究,采用CFD流场仿真技术对压力驱动方式下90°折管、突然扩散管、弯管三种流道的流态进行数值模拟,重点介绍了电渗驱动的流场仿真技术,并以十字交叉微管道为对象进行电渗流场仿真;同时采用玻璃微加工工艺制造了上述四种微流道模型,并通过Micro-PIV技术对其相应条件下的流场进行试验测试,并定量对比与分析了仿真与试验结果,结论显示Micro-PIV是适合于微米级流场检测的最有效试验手段之一,同时通过试验也验证了N-S方程在微米级流场数值计算中是依然适用的。
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| 关 键 词： | 微流体 流场仿真 电渗 |
| 修稿时间： | 2005年6月10日 |
SIMULATION AND MICRO-PIV RESEARCH ON CLASSICAL MICROCHANNEL FLOW |
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| XIE Haibo,FU Xin,YANG Huayong,CHEN Hong.SIMULATION AND MICRO-PIV RESEARCH ON CLASSICAL MICROCHANNEL FLOW[J].Chinese Journal of Mechanical Engineering,2006,42(5):32-38. |
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| Authors: | XIE Haibo FU Xin YANG Huayong CHEN Hong |
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| Abstract: | Both the theoretical and experimental analyses on several typical micro channels of the micro fluidic systems are presented. The flow patterns of the rigging angle bend channel, the sudden expansive channel and the elbow channel on the pressure driven mode are numerically analyzed by using CFD simulation technology. The simulation method for the electro-osmosis is described and the electroosmosis flow inside the cross channel is simulated. Four kinds of micro channel models are micromachined with glass material and experimentally detected by using Micro-PIV technology. A good agreement is obtained by comparing the simulation results with the experimental results. From the results, The Micro-PIV technology is indicated to be the most efficient experimental method for micro flow detection. Furthermore, N-S equation is experimentally proved to be correct in the micron flow numerical simulation. |
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| Keywords: | Micro-PIV |
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