| 水平管间溴化锂溶液滴状降膜流动分析 |
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| 引用本文： | 汪磊磊,由世俊,王书中,张欢.水平管间溴化锂溶液滴状降膜流动分析[J].天津大学学报(自然科学与工程技术版),2010,43(1). |
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| 作者姓名： | 汪磊磊 由世俊 王书中 张欢 |
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| 作者单位： | 天津大学环境科学与工程学院,天津,300072 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目 |
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| 摘 要： | 对溴化锂溶液在水平管间的实际液滴流动过程进行了记录分析,以改进目前滴状降膜吸收数值模型中的理想化球形液滴假设.使用高速摄像机,对16 mm管间距下溴化锂溶液滴状流动过程进行了拍摄.采用图像边缘识别技术、样条拟合和二维曲线旋转积分方法,得到了液滴表面积和体积关于时间的变化关系.根据液滴的发展特点,将管间液滴形成划分为悬垂拉伸、不稳定液柱和破裂降落3个阶段,据此提出了不同溶液流量下液滴形成的预测模型.管间液滴表面积和体积发展的预测曲线与实测结果吻合较好.该模型可以在滴状降膜传热传质数值计算中得到应用.
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| 关 键 词： | 水平管 降膜 溴化锂溶液 液滴形成 预测模型 |
Analysis of LiBr Solution Droplet Falling Film Flow Between Horizontal Tubes |
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| WANG Lei-lei,YOU Shi-jun,WANG Shu-zhong,ZHANG Huan.Analysis of LiBr Solution Droplet Falling Film Flow Between Horizontal Tubes[J].Journal of Tianjin University(Science and Technology),2010,43(1). |
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| Authors: | WANG Lei-lei YOU Shi-jun WANG Shu-zhong ZHANG Huan |
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| Institution: | WANG Lei-lei,YOU Shi-jun,WANG Shu-zhong,ZHANG Huan(School of Environmental Science , Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | To improve the ideal sphere model in the numerical simulation of falling film absorption in droplet mode,the real droplet flow process of LiBr solution between horizontal tubes has been recorded and analyzed.A high speed camera was used to take pictures of the LiBr solution droplet flow behavior between horizontal tubes separated by 16 mm.The variations of droplet surface area and volume with time were obtained using image edge detection technique,spline curve fitting algorithm and 2-dimensional curve revol... |
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| Keywords: | horizontal tube falling film LiBr solution droplet formation prediction model |
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