电极构型对双管环空介质流体EHD强化传热影响的数值与实验研究

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electrostatics Pub Date : 2025-07-04 DOI:10.1016/j.elstat.2025.104126

M. Amirhakimi, M. Saffar-Avval, M.R. Hajmohammadi, M. Mirzaei, G. Ahmadibeni

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引用次数: 0

摘要

采用电流体动力传导泵送的方法研究了电极尺寸和内部间隙对变压器油强化传热的影响。OpenFOAM开发了一种数值求解器，并经过验证，可以分析5种雷诺数（最高50）和7种电压（最高24 kV）下的16种几何形状。通过优化接地电极尺寸和内间隙，传热增强率从43%提高到80%。最佳配置-高压电极（6毫米），内间隙（7毫米）和接地电极（15毫米）-达到了1.042的性能评估标准，在考虑压力损失的同时保持了效率。

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Numerical and experimental investigation of electrode configuration effects on EHD heat transfer enhancement of dielectric fluid in a double-pipe annulus

This study investigates the effect of electrode size and inner gaps on heat transfer enhancement in transformer oil using Electrohydrodynamic conduction pumping. A numerical solver has been developed in OpenFOAM and validated to analyze 16 geometries across five Reynolds numbers (up to 50) and seven voltages (up to 24 kV). Heat transfer enhancement increased from 43 % to 80 % by optimizing the ground electrode size and inner gap. The optimal configuration—high voltage electrode (6 mm), inner gap (7 mm), and ground electrode (15 mm)—achieved a Performance Evaluation Criteria of 1.042, maintaining efficiency while considering pressure loss.

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来源期刊

Journal of Electrostatics 工程技术-工程：电子与电气

CiteScore

4.00

自引率

11.10%

发文量

审稿时长

49 days

期刊介绍： The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.