• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Society of Mechanical Engineers(ASME) Joint U.S.-European Fluids Engineering Division Summer Conference 2006(FEDSM2006) vol.2; 20060717-20; Miami,FL(US) >A TWO ZONE INTERFACIAL SHEAR STRESS AND LIQUID FILM VELOCITY MODEL FOR VERTICAL ANNULAR TWO-PHASE FLOW
【24h】

A TWO ZONE INTERFACIAL SHEAR STRESS AND LIQUID FILM VELOCITY MODEL FOR VERTICAL ANNULAR TWO-PHASE FLOW

机译：垂直环形两相流动的两区界面剪切应力和液膜速度模型

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 standard approach in estimating the interfacial shear between the vapor and the liquid film in annular two-phase flow is to include the effect of waves using a two-phase friction factor. This has been successful for low pressure annular flows in large hydraulic diameter ducts (wave heights H/2 ). It does not, however, work well for high pressure flows in smaller hydraulic diameter ducts (wave heights ～ H/2). This suggests the need for a more detailed approach to incorporate wave effects in annular flow.rnIn visualization studies of annular flow, different types of liquid film waves are observed. This can be seen from strobe photography images (Figure 1) taken at Bettis Laboratory in a vertical duct (see also Rodriguez and Shedd (2004)). Much of the liquid surface is a relatively calm base film covered with random small amplitude waves. Periodically, larger amplitude "disturbance waves" form and travel axially at a higher velocity than the base film. Based on this observation, a two zone interfacial shear model has been developed to describe the shear of the disturbance waves and base film separately.
机译：估计环形两相流中蒸汽和液膜之间的界面剪切的标准方法是使用两相摩擦系数来包含波的影响。这已成功用于大直径液压管道中的低压环形流动（波高<< H / 2）。但是，它不适用于较小直径的液压导管（波高〜H / 2）中的高压流动。这表明需要更详细的方法在环流中纳入波效应。在环流的可视化研究中，观察到不同类型的液膜波。这可以从在垂直管道中的贝蒂斯实验室拍摄的频闪摄影图像（图1）中看到（另请参见Rodriguez和Shedd（2004））。大部分液体表面是覆盖着相对随机的小振幅波的相对平静的基膜。周期性地，形成更大幅度的“扰动波”并以比基膜更高的速度轴向传播。基于此观察结果，开发了一个两区界面剪切模型来分别描述扰动波和基膜的剪切。

著录项

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