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首页> 外文期刊>Journal of Heat Transfer >Numerical Study of Dielectric Fluid Bubble Behavior Within Diverging External Electric Fields
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Numerical Study of Dielectric Fluid Bubble Behavior Within Diverging External Electric Fields

机译：外扩散电场内介电气泡行为的数值研究

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摘要

A three-dimensional mathematical model is presented that models bubble deformation of a dielectric fluid due to the presence of a nonuniform electric field and calculates the net dielectrophoretic force that is exerted by the electric field on the bubble. The study includes the development of a method of predicting the shape of a bubble based on the arbitrary distribution of stresses over its surface without requiring an axisymmetric configuration. The reciprocal effect of the bubble's presence on the electric field is also incorporated into the model, and dimensional analysis is used to obtain a single key parameter that governs the bubble deformation phenomenon. Numerical implementation of the mathematical model shows that the bubble deformation can be significant. Furthermore, bubble deformation and electric field distortion can have significant effects on the dielectrophoretic behavior of bubbles in nonuniform fields, especially within small-scale devices where the bubble size and electrode spacing are similar in magnitude.
机译：提出了三维数学模型，该模型对由于存在不均匀电场而引起的介电液的气泡变形进行建模，并计算电场在气泡上施加的净介电泳力。该研究包括开发一种基于气泡表面任意应力分布而无需轴对称构型的预测气泡形状的方法。气泡的存在对电场的相互影响也被纳入到模型中，并且使用尺寸分析来获得控制气泡变形现象的单个关键参数。数学模型的数值实施表明，气泡变形可能是显着的。此外，气泡变形和电场畸变会对气泡在非均匀场中的介电泳行为产生重大影响，尤其是在气泡尺寸和电极间距大小相似的小型设备中。

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  • 来源
    《Journal of Heat Transfer》 |2008年第3期|p.82-91|共10页
  • 作者

    Matthew R. Pearson; Jamal Seyed-Yagoobi;

  • 作者单位

    Two-Phase Flow and Heat Transfer Enhancement Laboratory, Mechanical, Materials, and Aerospace Engineering Department, Illinois Institute of Technology, 10W. 32nd Street, Chicago, IL 60616;

  • 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 热力工程、热机;
  • 关键词

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