疏水纳米SiO_2对微管道流动特性的影响
Effect of hydrophobic nanoparticles SiO_2 on flow characteristics in microchannel
查看参考文献12篇
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文摘
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通过微管道流动试验,探讨疏水纳米SiO_2的降压增注机理.在微尺度流动中,由于表面积/体积非常大,液固界面性质对流动有很大影响.在不同管壁界面条件下,用超纯水在内径约为25μm的毛细管内进行流动特性试验.结果表明:相同压力下,经过油基疏水纳米SiO_2试剂处理后,水在微管中的流量有了较明显地提高;疏水纳米SiO_2吸附能够使微管管壁具有超疏水性,从而产生水流滑移效应,达到减阻增流效果. |
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其他语种文摘
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The mechanism of decompression and augmented injection with hydrophobic nanoparticles SiO_2 adsorbing method was studied based on microchannel flow experiments. Due to the large ratio of surface area and volume in microscale flow, the property of liquid-solid interface has a considerable effect on the flow. The flow characteristics experiment was done using ultrapure water through a capillary with inner diameter of near 25 μm under the different boundary conditions of the micro-channel wall. The results show that the flow rate of water was increased considerably due to the reduction of flowing resistance under the same pressure in the microchannel absorbed by oil based hydrophobic nanoparticles SiO_2. The wettability of micro-channel wall was transformed from hydrophilicity into stronger hydrophobicity, then the slip effect appears and the flow resistence was reduced. |
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来源
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中国石油大学学报. 自然科学版
,2009,33(1):109-111,119 【核心库】
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关键词
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微管道
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疏水纳米SiO_2
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滑移效应
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减阻
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微流动试验
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地址
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1.
上海大学,上海市应用数学和力学研究所, 上海, 200072
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中国科学院力学研究所, 非线性力学国家重点实验室, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1673-5005 |
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学科
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石油、天然气工业 |
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基金
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国家自然科学基金
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国家863计划
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上海市科技攻关重点项目
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上海市教委创新项目
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上海大学创新基金
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文献收藏号
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CSCD:3562437
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