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中文摘要：
在外加交变电场作用下,介电液中的粒子将极化产生介电泳力。此外,粒子还将受到重力、布朗运动以及液体的粘滞阻力等作用。粒子运动遵循牛顿运动定律,分别模拟粒子从90、50和10μm高度处释放的运动情况,并以90μm高度处释放为例分析了粒子运动速度的变化。结果表明,粒子运动速度可由初始释放时的静止状态增大至10-3 m/s数量级。随着释放高度的降低,粒子到达电极的运动时间减小,可由90μm释放时的11.2s缩短至10μm释放时的0.15s。
英文摘要：
When an external electric field is applied to a particle dispersed in dielectric liquid,a dipole will be induced and as a result,the dielectrophoretic force is generated,which is exerted on the particle along with the gravity force,the Brownian motion force and the drag force from the liquid.The motion of a particle conforms to Newton′s law of motion.In this paper,the particle movement is simulated with its releasing positions at heights of 90μm,50μm,and 10μm respectively.The movement velocity of the particle is analyzed in the case of the releasing height of90μm.Results indicate that the movement velocity of the particle could reach the order of 10-3m/s from its initial stationary status.With the decline of the releasing height,the time for the particle to arrive at the electrode from its initial position would decrease.When the releasing position changes from 90μm to 10μm,the arrival time reduces from 11.2sto 0.15 s.
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