Characteristics of electrohydrodynamic pump of the dissociation type: Low- and high-voltage ranges

2014 IEEE 18th International Conference on Dielectric Liquids (ICDL) Pub Date : 2014-06-01 DOI:10.1109/ICDL.2014.6893114

V. Chirkov, Y. Stishkov, S. Vasilkov

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引用次数: 3

Abstract

The paper presents the results of the computer simulation of a single section of electrohydrodynamic (EHD) conduction pump with and without taking into account the enhancement of the dissociation rate under the effect of the strong electric field (the Wien effect). The numerical computations were carried out on the basis of the complete set of EHD equations using commercial software package COMSOL Multiphysics. The behavior of EHD flow inside the pump was investigated for different ratios between positive and negative ion mobilities and the effect of the latter on the pumping efficiency was estimated. The features of the pump operation in the case of the Wien effect occurrence were investigated. It was shown that the enhancement of the dissociation rate can lead to the reversion of EHD flow direction with increasing voltage. Besides, the results obtained in the presented computer model was compared to those obtained in the simplified one (based on the hydrostatic approach) and considerable discrepancy between the calculated pressure drops was revealed.

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解离型电液泵特点:低压和高压范围

本文介绍了考虑和不考虑强电场(维恩效应)作用下解离率提高的单段电流体动力(EHD)传导泵的计算机模拟结果。利用商用软件COMSOL Multiphysics，在完整的EHD方程组基础上进行数值计算。研究了正负离子迁移率对泵内EHD流动特性的影响，并分析了正负离子迁移率对泵内泵送效率的影响。研究了发生维恩效应时泵的运行特点。结果表明，随着电压的升高，解离速率的提高会导致EHD流动方向的逆转。此外，将所建计算机模型的计算结果与简化模型(基于流体静力学方法)的计算结果进行了比较，发现计算出的压降存在较大差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE 18th International Conference on Dielectric Liquids (ICDL)

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