• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Heat Transfer >A Probability Model for Fully Developed Annular Flow in Vertical Pipes: Film Thickness, Interfacial Shear Stress, and Droplet Size Distribution
【24h】

A Probability Model for Fully Developed Annular Flow in Vertical Pipes: Film Thickness, Interfacial Shear Stress, and Droplet Size Distribution

机译：垂直管道中充分发展的环形流动的概率模型：膜厚，界面剪切应力和液滴尺寸分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The movement and distribution of each phase in annular flow can be considered as random events at a microscopic level. Hence, a probability analysis is appropriate to estimate the morphological features and mechanical characteristics of annular flow from a macroscopic scale. In the present work, three characteristic parameters including the film thickness, interfacial shear stress, and characteristic droplet size are predicted by a probability model as the statistical results of abundant samples. The film thickness can be directly calculated as one of the solutions to the basic equations of annular flow. The interfacial shear stress is estimated as a combination of the frictional and dragging components. The droplet size distribution is obtained using a method of undetermined coefficients. These characteristic parameters are well verified by comparing with the experimental data available in the literature. It is demonstrated that the probability model can accurately calculate the film thickness and maximum droplet size, but the predictions of the interfacial shear stress and mean droplet size are relatively coarse. Furthermore, the effects on the film thickness and Sauter mean diameter of other parameters are discussed in detail. Finally, some important phenomena observed in experiments are interpreted by the probability model.
机译：环形流动中每个相的运动和分布都可以视为微观水平的随机事件。因此，概率分析适合从宏观尺度估计环形流的形态特征和力学特性。在本工作中，通过概率模型预测了包括膜厚，界面剪切应力和特征液滴尺寸在内的三个特征参数，作为大量样品的统计结果。膜厚可以直接计算为环形流基本方程的解之一。界面剪切应力被估计为摩擦分量和阻力分量的组合。使用不确定系数的方法获得液滴尺寸分布。通过与文献中提供的实验数据进行比较，可以很好地验证这些特征参数。结果表明，概率模型可以准确地计算薄膜厚度和最大液滴尺寸，但对界面剪切应力和平均液滴尺寸的预测相对较粗糙。此外，还将详细讨论其他参数对膜厚和索特平均直径的影响。最后，概率模型解释了实验中观察到的一些重要现象。

著录项

  • 来源
    《Journal of Heat Transfer》 |2017年第3期|39-48|共10页
  • 作者

    Ri Zhang; Haixiao Liu; Sheng Dong; Mingyang Liu;

  • 作者单位

    College of Engineering, Ocean University of China, Qingdao 266100, China State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China;

    College of Engineering, Ocean University of China, Qingdao 266100, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    annular flow; probability model; film thickness; interfacial shear stress; drop-let size distribution;

    机译：环形流概率模型膜厚界面剪切应力液滴尺寸分布;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号