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首页> 外文期刊>International Journal of Heat and Mass Transfer >A model of liquid film breakdown formed due to impingement of a two-phase jet on a horizontal surface
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A model of liquid film breakdown formed due to impingement of a two-phase jet on a horizontal surface

机译：两相射流撞击水平表面形成的液膜破裂模型

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摘要

The present work aims to provide an explanation to the phenomenon of breakdown of the thin liquid film created by impinging two-phase, liquid-gas jet. Existing in the literature models describe merely the breakdown of single phase liquid films. The model presented here is based on examination of mass and energy equations under the applied criterion of the minimum of total energy. That allows to determine the minimum thickness of isothermal, thin liquid film created by impinging two-phase jet on a solid surface. The mechanical energy of the system consists of kinetic energy of liquid film and surface energy of all physical surfaces consisting for the control surface. An analytical expression for the minimum thickness of such liquid film is derived. The liquid film thickness at the breakdown is a function of the contact angle and shear stresses on the liquid-gas interface. Some comparisons with the experimental data are shown exhibiting a good performance of the postulated model.
机译：本工作旨在提供对通过撞击两相液-气喷射而产生的薄膜破裂的现象的解释。文献中现有的模型仅描述了单相液膜的破裂。此处介绍的模型基于在总能量最小值的应用准则下对质量和能量方程式的检查。这样就可以确定通过在固体表面上撞击两相射流产生的等温，薄液膜的最小厚度。系统的机械能由液膜的动能和构成控制表面的所有物理表面的表面能组成。推导了这种液膜的最小厚度的解析表达式。破裂时的液膜厚度是液-气界面上接触角和剪切应力的函数。与实验数据的一些比较显示出了所假定模型的良好性能。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5456-5464|共9页
  • 作者

    J. Mikielewicz; D. Mikielewicz; S. Gumkowski;

  • 作者单位

    The Szewalski Institute of Fluid-Flow Machinery PASci, Gdansk, Poland;

    rnFaculty of Mechanical Engineering, Gdansk University of Technology, Gdansk, Poland;

    rnFaculty of Mechanical Engineering, Gdansk University of Technology, Gdansk, Poland University of Warmia and Mazury, Faculty of Technical Sciences, Department of Electric and Power Engineering, Olsztyn, Poland;

  • 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

    two-phase jet; liquid film breakdown; stability criterion;

    机译：两相射流液膜破裂;稳定性标准;

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