庄磊, 唐彪, 李发宏, 周莹, 李琛, 周国富. 非开放式电润湿系统的电流体动力学仿真[J]. 华南师范大学学报(自然科学版), 2017, 49(4): 16-22.
引用本文: 庄磊, 唐彪, 李发宏, 周莹, 李琛, 周国富. 非开放式电润湿系统的电流体动力学仿真[J]. 华南师范大学学报(自然科学版), 2017, 49(4): 16-22.
Electrohydrodynamic Simlulation of Confined Electrowetting Display[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(4): 16-22.
Citation: Electrohydrodynamic Simlulation of Confined Electrowetting Display[J]. Journal of South China Normal University (Natural Science Edition), 2017, 49(4): 16-22.

非开放式电润湿系统的电流体动力学仿真

Electrohydrodynamic Simlulation of Confined Electrowetting Display

  • 摘要: 本文聚焦以电润湿显示像素单元为代表的复杂非开放式油/水电润湿系统,通过理论建模与实验结合的方法对该两相微流体系的电流体动力学特性进行了研究。本文基于COMSOL仿真环境,提供的两相流相场与静电场,建立了包括油水动力粘度、界面张力、润湿性等重要参数的二维动力学仿真模型,并研究了该微流体系的光电响应特性。对比结果表明,通过层流两相流相场与静电场耦合方法成功模拟电润湿显示像素单元内的电流体动力学特性。导电液体的动力粘度值与油膜的光学响应时间正相关,但对像素最终的开口率大小影响较小;油/水界面张力值与油膜破裂时间正相关,且主导油/水界面的运动速度。该模型对深入理解和预测非开放式电润湿系统的动力学性能,加速相关的研发进程有重要意义。

     

    Abstract: This article focuses on the display represented by electrowetting display pixel unit of complex confined oil/water electrowetting system, by combined the theoretical modeling and experimental,the microflow system of the two-phase electricfluid dynamic characteristics were studied. This paper based on phase field and electrostatic field for two-phase flowoffered by COMSOL,a two-dimensional dynamic simulation model including important parameters,such as,the oil-water viscosity, surface tension, wettability were built up and photoelectric characteristics of the microflow system research.The results show that the dynamic characteristics of the electricfluidin the pixel cell can be simulated successfully by the coupling method of two-phase flow field and electrostatic field.The dynamic viscosity of conducting liquid is positively related to the oil film optical response time, but eventually has little effect on the white area of pixel size; the oil / water surface tension value is positively related with the oil film rupture time and led the movement speed of the oil / water interface.The model makes great significance to understand and predict the dynamic performance of the confinedelectrowetting system and accelerate the development process.

     

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