| 微管道中Cu-水纳米流体的流动特性(英文) |
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| 引用本文： | 凌智勇,朱爱军,丁建宁,范真,程广贵,傅鹏飞.微管道中Cu-水纳米流体的流动特性(英文)[J].纳米技术与精密工程,2011,9(2):100-104. |
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| 作者姓名： | 凌智勇 朱爱军 丁建宁 范真 程广贵 傅鹏飞 |
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| 作者单位： | 1. 江苏大学微纳米科学技术研究中心,镇江,212013
2. 江苏大学微纳米科学技术研究中心,镇江212013;江苏工业学院低维材料微纳器件与系统研究中心,常州213164;常州市新能源工程重点实验室,常州213164 |
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| 基金项目： | 江苏省科技支撑计划(工业)资助项目，江苏大学微纳制造创新团队基金 |
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| 摘 要： | 采用数值模拟和实验相结合的方法,对压力驱动下质量分数为1%的Cu-水纳米流体在直径分别为25μm和50μm且长度不同的微管道中的流动特性进行研究.实验过程中采用两步法制得稳定的纳米流体.研究结果表明,纳米流体的流量-压力特性基本呈线性关系,且流量随驱动压力的增大而增大,其流动特性符合单相流体的假设.但模拟结果与实验结果之间存在一定的差异,主要是由于基液中颗粒的团聚结构、纳米流体黏度的变化、尺度效应和边界滑移等因素造成的.
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| 关 键 词： | 纳米流体 流动特性 微管道 团聚 |
Flow Characteristics of Cu-Water Nanofluid in Micro-Channels |
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| LING Zhi-yong,ZHU Ai-jun,DING Jian-ning,FAN Zhen,CHENG Guang-gui,FU Peng-fei.Flow Characteristics of Cu-Water Nanofluid in Micro-Channels[J].Nanotechnology and Precision Engineering,2011,9(2):100-104. |
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| Authors: | LING Zhi-yong ZHU Ai-jun DING Jian-ning FAN Zhen CHENG Guang-gui FU Peng-fei |
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| Affiliation: | LING Zhi-yong1,ZHU Ai-jun1,DING Jian-ning1,2,3,FAN Zhen1,CHENG Guang-gui1,FU Peng-fei1(1.Center of Micro/Nano Science and Technology,Jiangsu University,Zhenjiang 212013,China,2.Center of Low-Dimension Materials,Micro/Nano Device and System,Jiangsu Polytechnic University,Changzhou 213164,3.Key Laboratory of New Energy Engineering,China) |
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| Abstract: | In this paper, both numerical simulations and experimental study were performed on the flow characteristics of Cu-water nanofluid with 1% mass faction of Cu nano-particles in different micro-chan-nels with diameters of 25 μm and 50 μm respectively and different lengths under the pressure-driven con-ditions. Two-step method was adopted to prepare the stable nanofluid. The results show that the mass flow of nanofluids is in linear relations with the pressure and increases with the increase of pressure, and the behaviors of the nanofluids are in agreement with the hypothesis of one phase fluid. However, the simulation results are different from the experimental data, primarily due to the aggregation of nanoparti-cles in base fluids, the changes in the viscosity of the nanofluids, the size effect and the presence of boundary slip. |
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| Keywords: | nanofluid flow characteristic micro-channel cluster |
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