首页> 外文期刊>International Journal of Multiphase Flow >Experimental study of two-phase flow pattern evolution in a horizontal circular tube of small diameter in laminar flow conditions
【24h】

Experimental study of two-phase flow pattern evolution in a horizontal circular tube of small diameter in laminar flow conditions

机译:层流条件下小直径水平圆管内两相流型演变的实验研究

获取原文
获取原文并翻译 | 示例
获取外文期刊封面目录资料

摘要

The carried out experimental study aims at analyzing air-water two-phase flow patterns in a horizontal tube for laminar flow with carefully controlled conditions. An experimental test rig has been setup to produce a two-phase flow in a glass tube of 3mm inner diameter with co-current air and water flows. Unlike previous studies, the investigated ranges of superficial velocity of the liquid and gas are from 0.78×10~(-3)ms~(-1) to 79×10~(-3)ms~(-1) and from 2.3×10~(-3)ms~(-1) to 3.54ms~(-1) respectively. Flow visualizations are recorded with a high-speed camera in the entrance region at L/D=10 corresponding to a mixing zone of the two phases and far downstream at L/D=420. The results are used to highlight the flow patterns in both zones. Within the explored ranges of superficial velocities, several flow patterns were obtained namely bubbly, slug and annular flow pattern. More complex flow patterns were visualized in the entrance region that evolve to fewer and simplified flow structure with smoother interfaces far downstream. Flow maps are drawn and proposed. They reveal some pattern rearrangements. A detailed description and the physical interpretation of the change in the flow structure between the two investigated zones are given in the paper.
机译:进行的实验研究旨在分析水平管中的空气-水两相流模式,以在严格控制的条件下进行层流。已经建立了一个实验测试台,以在3mm内径的玻璃管中产生两相流,并流空气和水。与以前的研究不同,液体和气体的表面速度研究范围为0.78×10〜(-3)ms〜(-1)至79×10〜(-3)ms〜(-1)和2.3×。 10〜(-3)ms〜(-1)到3.54ms〜(-1)用高速摄像机在与两个相的混合区域相对应的L / D = 10的入口区域中,并在L / D = 420的更远下游记录流动可视化。结果用于突出显示两个区域中的流动模式。在表面速度的探索范围内,获得了几种流动模式,即气泡状,团状和环形流动状。在入口区域中可以看到更复杂的流型,这些流型演变为更少的简化流结构,并且在下游具有更平滑的界面。绘制流程图并提出建议。它们显示出一些模式重排。本文给出了两个研究区域之间流动结构变化的详细描述和物理解释。

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