荷电水雾除尘过程中颗粒运动轨迹的数值模拟

基于牛顿运动定律，用拉格朗日法推导出了粉尘粒子在荷电水雾除尘过程中的轨迹方程，建立了单个粒子运动轨迹的数学模型。基于MATLAB自行设计了颗粒轨迹可视化软件包，利用该软件包对所建数学模型进行了计算机模拟，实现了粒子运动轨迹的快速成图。通过数值模拟研究，指出了静电力作用是低速小粒子被捕集的主要因素，证明了惯性碰撞作用及拦截效应在粉尘粒子被捕集过程中的重要作用。模拟试验结果表明该软件包设计合理、适用。

Numerical simulation for particle-trajectory in a spray charging precipitator

The trajectory equation of particles was put forward with Lagrangian approach on the basis of Newton law. The mathematical model of a single particle trajectory was established. The modeling software box was programmed based on MATLAB, by which the mathematical model was simulated to make it visual. The simulation study points out that the electrostatic power is considered as the major factor to collect the small particles of low speed and the effect of inertia and the hold up process are important to the removal of the particles. The software box is proved reasonable and applicable in design.