单个汽泡周围的电场数值研究

NUMERICAL STUDY ON ELECTRIC FIELD AROUND A SINGLE BUBBLE

为明晰电场对汽—液两相系统的效应,本文针对均匀电场作用下的汽液两相流中附着于壁面的单个汽泡,建立了数学模型,考虑了汽泡的存在对电场分布的影响。通过求解电场控制方程,得到了均匀电场作用下汽泡周围及其内部的电势及电场分布的数值解。这为进一步研究 EHD 作用下的两相系统中汽泡的行为,揭示 EHD强化沸腾换热机理奠定了基础。

In order to investigate the effects of the electric field on gas-liquid two phase system, a mathematical model was established to predict the electric field distribution around a single bubble attached to one plate in two-phase system applied a uniform electric field. The effect of the bubble on the whole electric field distribution was considered. The equipotential lines and electric field strength around the bubble were obtained by solving the governing equations for electric field. The numerical results presented in this paper are in good agreement with the theoretical analysis. This study lays a foundation for further mechanics investigation in EHD heat transfer including the bubble behaviors.