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基于颗粒的扩散特性和颗粒对流体湍流脉动响应的不同机理，以圆柱为模拟目标物，建立了静电喷粉沉积过程中荷电颗粒随机位移的概率密度分布函数所满足的Ｆｏｋｋｅｒ－Ｐｌａｎｃｋ方程。由该方程解出的分布函数表明，沉积过程中荷电颗粒的运动特性不仅决定于颗粒的荷电特性与空间电场分布以及流体的运动特性，而且与初始位置和速度有关。
Based on the diffusion characteristics of the particles and the different mechanism of the particle ’s response to the turbulent pulsation of the fluid, a Fokker - Planck equation satisfying the probability density distribution function of random displacement of the charged particles during the electrostatic powder deposition was established using the cylinder as a simulated target. The distribution function solved by this equation shows that the motion of charged particles during deposition is determined not only by the charge characteristics of the particles, the distribution of the electric field in space, and the fluid kinematics, but also by the initial position and velocity.