Electro-thermo-convection in dielectric liquid subjected to partial unipolar injection between two eccentric cylinders

Abstract

Purpose The purpose of this work is to highlight the effects of partial unipolar injection on electro-thermo-convection (ETC) in dielectric liquid contained between two eccentric cylinders. Design/methodology/approach A finite volume method was used to solve governing equations. The study is performed for different parameters, such as radius ratio (0.2 <= Gamma <= 0.6), dimensionless electric Rayleigh number (0 <= T <= 900), eccentricity (-0.4 <= e <= 0.4) and thermal Rayleigh number (10 <= Ra <= 5.105). Findings It is found that heat transfer increases with increase in dimensionless electric Rayleigh number and eccentricity ratio. Originality/value The originality of this work is to analyze the ETC in dielectric liquid subjected to partial unipolar injection between two eccentric cylinders