| 电场作用下的气泡受力分析 |
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| 引用本文： | 陈凤,宋耀祖,陈民.电场作用下的气泡受力分析[J].工程热物理学报,2005,26(Z1):146-148. |
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| 作者姓名： | 陈凤 宋耀祖 陈民 |
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| 作者单位： | 清华大学航天航空学院,传热强化与过程节能教育部重点实验室,北京,100084 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 本文在蠕动流近似的基础上分析计算了具有不同介电常数工质的气泡在外电场力作用下的受力状况。计算结果表明电场力的水平分力使气泡沿场强方向伸长,并且液体和气体相对介电常数之比越大的工质所受的电场力越大。从而,沸腾换热过程中外加电场对液体和气体相对介电常数比值较大的工质能够产生更大的影响。
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| 关 键 词： | 强化传热 沸腾换热 电场 气泡 |
| 文章编号： | 0253-231X(2005)Suppl.-0146-03 |
| 修稿时间： | 2005年3月16日 |
ANALYSIS OF THE ELECTRIC STRESSES ACTING ON A BUBBLE IN ELECTRIC FIELD |
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| CHEN Feng,SONG Yao-Zu,CHEN Min.ANALYSIS OF THE ELECTRIC STRESSES ACTING ON A BUBBLE IN ELECTRIC FIELD[J].Journal of Engineering Thermophysics,2005,26(Z1):146-148. |
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| Authors: | CHEN Feng SONG Yao-Zu CHEN Min |
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| Abstract: | Based on creeping flow approximation, electric stress acting on bubble with different dielectric permittivity is analyzed and calculated in this paper. The results show that the horizontal component of the electric stress elongated the bubble. The larger the relative dielectric permittivity between the liquid and vapor phases for the working fluid, the greater the electric stress acting on the bubble. Hence in the nucleate pool boiling, the electric field has a stronger effect on working fluids for the larger relative dielectric permittivity. |
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| Keywords: | heat transfer enhancement boiling heat transfer electric field bubble |
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