水溶液中Ni^(2+)的自由扩散分析与模拟实验

Analysis and Simulation Test for Free Diffusion of Ni^(2+)in An Aqueous Solution

自由扩散一般比较抽象,其实验耗时长,且很难从微观角度进行观测与分析,不宜开展实验教学。为此,以金属离子Ni^(2+)在水溶液中的自由扩散为参考依据,采用随机自由扩散模型模拟刚性球体在有限空间中的自由扩散过程。模拟结果与实时观测Ni^(2+)在水溶液中自由扩散的实验结果基本一致。并且通过模拟可以从微观角度实时观测和分析自由扩散的无序过程,进而探究局部参数的变化规律。它可以作为虚拟仿真教学的一个有用工具。

For free diffusion,it is always relatively abstract,and its experiment consumes long time without micro-perspective observation and analysis.For these reasons,random free diffusion model was used to simulate the free diffusion process of rigid spheres in a limited 3D space,based on free diffusion of Ni^(2+)in an aqueous solution.The simulation result was consistent with the experimental result of real-time measurement of Ni^(2+)content for its free diffusion in an aqueous solution.Moreover,through the simulating test,it was very easy for micro-perspective observation and analysis on the random process of free diffusion,to explore the variation laws of parameters in the optional position.The simulation could be an useful tool of virtual simulation teaching.