The Coagulation of Soot Particles with van der Waals Forces
The Coagulation of Soot Particles with van der Waals Forces
复制标题
DOI：
10.1080/00102208808947110
复制
发表时间：
1988-06
影响因子：
1.9
通讯作者：
S. Harris;I. Kennedy
中科院分区：
文献类型：
--
作者：
S. Harris;I. Kennedy
通过对考虑范德华力的烟尘气溶胶凝聚动力学进行数值模拟，对其凝聚动力学进行了详细的计算。在1600K和1个大气压下，两个烟尘颗粒之间的范德华作用力使碰撞速率增加了10，对于直径1 nm的颗粒，最大值约为2.4，对于不同尺寸的颗粒，最大值仅略高于1。在估算增强因子的情况下，总的凝固率大约是未增强的凝固率的两倍；这与实验结果相吻合。在整个计算过程中，无论是否包括碰撞增强因子，烟尘气溶胶的尺寸分布都非常接近于自保形式。
A detailed calculation of the coagulation kinetics of a soot aerosol has been performed by simulating numerically the coagulation kinetics with the inclusion of van der Waals forces. The van der Waals forces between two soot particles at 1600 K and 1 atmosphere give rise 10 a collision rate enhancement which varies between a maximum of about 2.4 for 1 nm diameter particles to just over 1 for particles of dissimilar sizes. The total coagulation rate with the estimated enhancement factors was about twice the unenhanced rates; this compares favorably with experiment. Over the duration of the computation the soot aerosol size distribution approaches closely the self-preserving form, whether or not the collisional enhancement factors are included.