Heat transfer enhancement by an electrohydrodynamic plume induced by ion injection from a hyperbolic blade

被引：0
|
作者：
Wu, Jian [1 ]
Traore, Philippe [1 ]
Louste, Christope [1 ]
Perez, Alberto T. [2 ]
Vazquez, Pedro A. [3 ]
机构：
[1] Inst PPRIME, Dept Fluide Therm Combust, F-86962 Futuroscope, France
[2] Univ Seville, Fac Fis, Dept Elect & Electromagnetismo, E-41012 Seville, Spain
[3] Univ Seville, ESI, Dept Fis Aplicada 3, Seville 41092, Spain
来源：
PROCEEDINGS OF THE 2014 IEEE 18TH INTERNATIONAL CONFERENCE ON DIELECTRIC LIQUIDS (ICDL 2014) | 2014年
关键词：
Electroconvection; ion injection; dielectric liquid; heat transfer enhancement; numerical analysis; SPACE-CHARGE; MOTION; PLATE; JETS; MASS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The electrohydroyanmic (EHD) plume induced by charge injection from a hyperbolic blade into a dielectric liquid was considered to actively enhance heat transfer. We numerically studied an upward-facing hot plate with constant temperature cooled by an impinging ionic jet that results from a strong and autonomous injection. It is shown that the heat transfer rate expressed with the local and averaged Nusselt numbers are dramatically increased. In addition, we observe that the Nusselt number is independent of the Rayleigh number Ra (2.5x10(3) <= Ra <= 1.0x10(4)) for all electric Rayleigh numbers T considered (5.0 x10(2) <= T <= 2.0x10(4)), which reflects the fully dominant role of the electric force.
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页数：4
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