| 微小通道内气泡逸出行为的VOF模拟 |
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| 引用本文： | 周吉,丁玉栋,朱恂,王宏,廖强,王强.微小通道内气泡逸出行为的VOF模拟[J].热科学与技术,2011,10(2):110-116. |
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| 作者姓名： | 周吉 丁玉栋 朱恂 王宏 廖强 王强 |
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| 作者单位： | 重庆大学,工程热物理研究所低品位能源利用技术及系统教育部重点实验室,重庆,400030 |
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| 基金项目： | 国家自然科学基金资助项目(50876119); 重庆市自然科学基金资助项目(CSTC,2009BB6212) |
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| 摘 要： | 针对微小型直接甲醇燃料电池阳极流场,采用VOF(volume of fluid)方法模拟了液体通流微小通道内壁面逸出气泡的动态行为,讨论了液体物性、气体流速、逸出气孔直径对气泡形成、生长及脱离等过程以及流动阻力的影响.结果表明:随着甲醉溶液浓度的升高,单个气泡的脱离体积、脱离时间和流动阻力系数均减小;气体流速增加,气泡...
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| 关 键 词： | 气泡 VOF方法 小槽道 动力特性 数值模拟 |
VOF-simulation of dynamic behaviors of emerging gas bubble in mini-channel with liquid flow |
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| ZHOU Ji,DING Yu-dong,ZHU Xun,WANG Hong,LIAO Qiang,WANG Qiang.VOF-simulation of dynamic behaviors of emerging gas bubble in mini-channel with liquid flow[J].Journal of Thermal Science and Technology,2011,10(2):110-116. |
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| Authors: | ZHOU Ji DING Yu-dong ZHU Xun WANG Hong LIAO Qiang WANG Qiang |
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| Affiliation: | ZHOU Ji,DING Yu-dong,ZHU Xun,WANG Hong,LIAO Qiang,WANG Qiang(Institute of Engineering Thermophysics,Key Laboratory of Low-grade Energy Utilization Technologies and Systems,Chongqing University,Chongqing 400030,China) |
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| Abstract: | Based on micro direct methanol fuel cells,a numerical investigation using the volume of fluid(VOF) method is performed on the dynamic behaviors of a gas bubble subjected to liquid flow in a micro-channel.The process of the gas bubble emergence,growth,deformation and detachment are revealed by tracking the evolution of the liquid-gas interface,and the influences of liquid physical property,air flow rate and pore diameter on the bubble dynamics and flow resistance are discussed.The numerical simulation result... |
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| Keywords: | bubble volume of fluid method mini-channel dynamics numerical simulation |
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