关键词: 输油管道, 流体流动, 电荷输送, 计算模型, 层流, 紊流

Abstract: The new computational models for describing streaming electrification of oil with laminar and turbulent flow states are presented.On the basis of discharge mechanism given by J.Gavis,a new approach to settle the boundary condition on the interface between pipe wall and oil is put forward.The specific forms of charge transportation equation in a simple pipe for the two flow states were derived.The treatment method for boundary condition of the equation was studied.The influences of oil flow velocity,conductivity and temperature of oil on streaming electrification were taken into consideration in the models.The streaming current in two experimented pipes was calculated with this model.The calculated and experimented values are in good agreement.

Key words: oil pipe, fluid flow, charge transportation, computational model, laminar flow, turbulent flow