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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical modeling of tunable optofluidics lens based on combined effect of hydrodynamics and electroosmosis
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Numerical modeling of tunable optofluidics lens based on combined effect of hydrodynamics and electroosmosis

机译：基于流体动力学和电渗作用的可调光流体透镜数值模拟

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摘要

A numerical model of liquid-core liquid-cladding optofluidics lens under the combined effect of hydrodynamics and electroosmosis are presented in this paper. In the numerical simulation, a combined formulation using only one set of conservation equations to treat both fluids are employed. The coupled electric potential equation and Navier-Stokes equation are solved using the finite volume method. The level-set method is used to capture the interface between the fluids. To overcome a weakness in the level-set method, the localized mass correction scheme is applied to ensure mass conservation. The validity of the numerical scheme is evaluated by comparing with the experimental results; numerical results highlight the electroosmotic effect; the combined effect of pressure driven and electroosmosis can form optically smooth interfaces with arc-shape between the cladding fluids and the core fluid. Under fixed cladding flow rates, the same electric field forms symmetric biconvex lens only. Different electric fields can form biconvex lens, plane-convex lens, and meniscus lens. The results also present the velocity profiles and flow fields of micro lens. There is a good agreement between numerical and experimental results.
机译：提出了在流体动力学和电渗作用共同作用下的液芯液包膜光流体透镜数值模型。在数值模拟中，采用仅使用一组守恒方程来处理两种流体的组合公式。使用有限体积法求解耦合的电势方程和Navier-Stokes方程。水平设置方法用于捕获流体之间的界面。为了克服水平集方法的缺点，采用了局部质量校正方案以确保质量守恒。通过与实验结果的比较来评估数值方案的有效性。数值结果突出了电渗效应。压力驱动和电渗作用的共同作用可以在覆层流体和岩心流体之间形成弧形的光学光滑界面。在固定的包层流速下，相同的电场仅形成对称的双凸透镜。不同的电场可以形成双凸透镜，平凸透镜和弯月形透镜。结果还显示了微透镜的速度分布和流场。数值和实验结果之间有很好的一致性。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第10期|p.2647-2655|共9页
  • 作者

    Haiwang Li; Teck Neng Wong; Nam-Trung Nguyen; John C. Chai;

  • 作者单位

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

    Department of Mechanical Engineering, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates;

  • 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

    optofluidics; interface; hydrodynamic; electroosmosis;

    机译：光流体界面流体力学电渗;

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