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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Electrohydrodynamic effects on characteristic of isolated bubbles in the nucleate pool boiling regime
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Electrohydrodynamic effects on characteristic of isolated bubbles in the nucleate pool boiling regime

机译：电流体动力学对核池沸腾过程中孤立气泡特征的影响

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Application of electric fields demonstrates great promise as an active heat transfer enhancement technique. Here, we study experimentally some characteristics of isolated bubbles such as bubble departure diameter, nucleation rate (frequency), and density of nucleation sites under the influence of an electric field In the nucleate pool boiling regime, isolated bubbles were recorded with a high-speed video camera at a rate of 1000 frames/s. The quantitative and qualitative analyses of bubble characteristics, and latent heat transfer concluded that at a constant heat flux condition in the isolated bubble regime, the density of nucleation sites was a very sensitive boiling parameter when electric field varied. The latent heat contribution varied proportional with the density of nucleation sites when heat flux and/or electrode voltage varied. This further simplifies the complex task of modeling of the electrohydrodynamic enhanced pool boiling heat transfer in the isolated bubble regime. (C) 2003 Elsevier Science Inc. All rights reserved. [References: 14]
机译：电场的应用作为一种有效的传热增强技术显示出巨大的希望。在这里，我们通过实验研究分离的气泡的一些特征，例如在电场作用下的气泡离去直径，成核速率（频率）和成核位置的密度。在成核池沸腾状态下，以高速记录了分离的气泡摄像机的速度为1000帧/秒。对气泡特性和潜热传递的定量和定性分析得出的结论是，在隔离气泡状态下恒定的热通量条件下，当电场变化时，成核位点的密度是非常敏感的沸腾参数。当热通量和/或电极电压变化时，潜热贡献与成核位置的密度成比例地变化。这进一步简化了在孤立的气泡状态下对电流体动力学增强的池沸腾传热进行建模的复杂任务。 （C）2003 Elsevier Science Inc.保留所有权利。 [参考：14]

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