Numerical Investigation of Electrohydrodynamic Plumes for Locally Enhanced Cooling in Dielectric Liquids

被引：13

作者：

Wu, Jian ^{[1
]}

Traore, Philippe ^{[1
]}

Louste, Christophe ^{[1
]}

Dascalescu, Lucian ^{[1
]}

Tian, Fang-Bao ^{[2
]}

Perez, Alberto T. ^{[3
]}

机构：

[1] Inst PPrime, Dept Fluide Therm Combust, F-86962 Futuroscope, France

[2] Univ New S Wales, Sch Engn & Informat Technol, Canberra, ACT 2610, Australia

[3] Univ Seville, Fac Fis, Dept Elect & Electromagnetismo, E-41012 Seville, Spain

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2015年 / 51卷 / 01期

关键词：

Charge injection; dielectric liquid; electrohydrodynamic (EHD) plumes; finite-volume method; heat transfer enhancement; numerical simulation; HEAT-TRANSFER ENHANCEMENT; COULOMB-DRIVEN CONVECTION; UNIPOLAR INJECTION; NATURAL-CONVECTION; FLOW; ELECTROCONVECTION; STABILITY; VELOCITY; SCHEMES; PLATE;

D O I：

10.1109/TIA.2014.2328775

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we numerically explored the potential application of electrohydrodynamic (EHD) plumes in cooling local regions with high temperature. The EHD plume is induced by ion injection from a sharp metallic blade immersed in a dielectric liquid. A 2-D simulation which took into account all relevant physical variables for EHD plumes in a nonisothermal liquid was performed. It is found that both the local and average Nusselt numbers dramatically increase with the increase of the electric Rayleigh number (T) and the injection strength parameter (C). However, for the same T and C, the heat transfer augmentation effect is stronger for small Rayleigh numbers (Ra), which can be understood by comparing the relative importance between Coulomb force and buoyancy force.

引用

页码：669 / 678

页数：10

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