生物消光材料的扩散特性

Diffusion characteristics of biological extinction material

生物材料具有形态丰富、粒径分布广、培养周期短、质量密度低等特点,研究其性能特点对发展新型消光材料具有重要意义。针对生物消光材料在实际应用中的扩散特性,根据莱赫特曼扩散理论,建立了生物消光材料扩散模型,然后对典型自然环境下的生物材料扩散进行了模拟仿真,并定量讨论了风速、地面粗糙度等因素对生物材料扩散的影响。结果表明,受风速以及地面粗糙度等原因的影响,参考点高度的生物材料浓度的最大值不断减小,其空间位置也随着时间的变化不断移动。风速越大,地面粗糙度越高,生物消光材料扩散速率越大。

The biological material has the characteristics of rich morphology, wide particle size distribution, short growth cycle, low mass density. It is significant to study its performance characters for development of new extinction material. In order to study the diffusion characteristic of biological extinction material, according to Rechtman diffusion theory, the diffusion model of biological material was established. The diffusion of biological material in typical natural environment was simulated, and the effects of wind speed and surface roughness on the diffusion of biological material were quantitatively discussed. The results indicate that the maximum value of concentration of biological material on reference point was continuously reduced, and the spatial position of maximum value maximum value of concentration was also changed. The higher the wind speed and the greater the surface roughness, the faster the diffusion rate of biological material was.