Heat Transfer Enhancement in a Stagnant Dielectric Liquid by the Up and Down Motion of Conductive Particles Induced by Coulomb Forces
Publish place: Journal of Applied Fluid Mechanics، Vol: 10، Issue: 1
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
View: 126
This Paper With 15 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-10-1_015
تاریخ نمایه سازی: 3 بهمن 1400
Abstract:
When charged particles are exposed to an electric field the well-known Coulomb force acts on them. In this investigation, this force is utilized to induce vertical motion of spherical steel particles submerged in a dielectric liquid. The interelectrode space of a two parallel electrode system is filled with the liquid and dispersed steel particles, which become charged after contact with the electrodes. Experiments were carried out to measure the effect of this particle motion on the heat transfer between an electrode surface and an adjacent stagnant dielectric liquid. In order to interpret the experimental data, the dynamics of particles was analytically studied for low particle volume concentrations. Experimental results demonstrate significant heat transfer enhancement on low viscosity dielectric liquids. A detailed discussion is presented on the possible mechanisms responsible for such an enhancement.
Keywords:
Authors
G. Eslami
Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
E. Esmaeilzadeh
Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
P. García-Sánchez
Departamento de Electrónica y Electromagnetismo, Facultad de Física, Avenida Reina Mercedes s/n, ۴۱۰۱۲ Sevilla, Spain
A. Behzadmehr
Department of Mechanical Engineering, University of Sistan and Baluchestan, P.O. Box ۹۸۱۶۴-۱۶۱, Zahedan, Iran
S. Baheri
Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran