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首页> 外文期刊>Journal of Heat Transfer >Numerical Simulation of the Flow and Heat Transfer Induced by Corona Discharge Coupling With Electrostatically Forced Vibration
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Numerical Simulation of the Flow and Heat Transfer Induced by Corona Discharge Coupling With Electrostatically Forced Vibration

机译：电晕放电耦合与静电振动引起的流动和传热的数值模拟

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摘要

A thin, flexible plate electrode was adopted to generate both ionic wind and vibration in our previous study. The design contains a metal inductor placed next to the plate electrode so that it is attracted to vibrate by the induced electrostatic force. The resulting flow was used to enhance heat transfer. In this study, a numerical methodology is developed to unveil the flow structure induced by the corona discharge and electrode vibration. The oscillatory movement of the electrode is modeled as a cantilever beam vibrating at its first resonant mode. The electric and flow fields are solved by the finite volume methods (FVMs). It is shown that a jet-like flow is generated by the electric discharge. The oscillatory movement of the jet results in flat temperature profile in comparison with the corona only system. Owing to the unsteady characteristic, the jet strength is less strong than that without vibration. The calculated results are qualitatively in line with the experiments, though some considerable differences exist. It is found that the oscillatory flow brings about lower overall heat transfer effectiveness than that without vibration regardless of the corona voltage. On the contrary, experiments showed that heat transfer is enhanced at low corona voltages where the ionic wind is not so overwhelming. The disagreement is mainly attributed to the two-dimensional (2D) assumption made in the simulation. The experimental arrangement, the corona discharge, and the vortex flows resulted all are three-dimensional (3D). Therefore, 3D calculations become necessary.
机译：采用薄的柔性板电极在我们以前的研究中产生离子风和振动。该设计包含在板电极旁边放置的金属电感器，使得通过诱导的静电力被吸引到振动。得到的流动用于增强传热。在该研究中，开发了一种数值方法以推出由电晕放电和电极振动引起的流动结构。电极的振荡运动被建模为在其第一谐振模式下振动的悬臂梁。电动和流场通过有限体积方法（FVM）来解决。结果表明，通过放电产生喷射的流动。与电晕系统相比，射流的振荡运动导致平坦的温度曲线。由于特点不稳定，喷射强度不如没有振动的强度。计算结果与实验正常，尽管存在一些相当大的差异。结果发现，无论电晕电压如何，振荡流量比没有振动的较低总传热效果。相反，实验表明，在低电晕电压下，传热增强，其中离子风不如此压倒性。分歧主要归因于在模拟中进行的二维（2D）假设。实验布置，电晕放电和涡流流动导致所有是三维（3D）。因此，需要3D计算。

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  • 来源
    《Journal of Heat Transfer》 |2021年第7期|072103.1-072103.11|共11页
  • 作者

    Yeng-Yung Tsui; Hao-Yu Lin; Ting-Kai Wei; Yu-Jie Huang; Chi-Chuan Wang;

  • 作者单位

    Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan;

    Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan;

    Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan;

    Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan;

    Department of Mechanical Engineering National Chiao Tung University Hsinchu 300 Taiwan;

  • 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
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