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| 两种流型下雾滴表面气溶胶粒子的扩散沉积 | |
| 引用本文： | 亢燕铭,张仁建,沈恒根,王明星.两种流型下雾滴表面气溶胶粒子的扩散沉积[J].应用力学学报,2001,18(3):70-75. |
| 作者姓名： | 亢燕铭 张仁建 沈恒根 王明星 |
| 作者单位： | 1. 中国科学院大气物理研究所;东华大学 2. 中国科学院大气物理研究所 3. 东华大学 |
| 基金项目： | 陕西省教委专项科研基金(99JK205)和大气边界层物理与大气化学国家重点实验室开放基金资助项目 |
| 摘 要： | 用浓度边界层理论分析了势流和Hadamard流情形下雾滴或云滴前向驻点处小粒子的扩散效应。结果表明：存在静电效应时，有限直径小粒子在雾滴表面的扩散通量与两个无量纲数参数有效；对于无外场作用时的点粒子情形，上述两种流型下的扩散沉积特征与粘性流结果亦不相同。 |
| 关 键 词： | 气溶胶粒子 雾滴 浓度 边界层 扩散沉积 |
| 文章编号： | 1000-4939(2001)03-0070-06 |
| 修稿时间： | 2000年6月30日 |
Diffusional Deposition of Aerosol Particles on Droplets Predicted by Two Different Flow Patterns |
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| Kang Yanming , Zhang Renjian Shen Henggen Wang Mingxing.Diffusional Deposition of Aerosol Particles on Droplets Predicted by Two Different Flow Patterns[J].Chinese Journal of Applied Mechanics,2001,18(3):70-75. | |
| Authors: | Kang Yanming Zhang Renjian Shen Henggen Wang Mingxing |
| Institution: | Kang Yanming 1,2 Zhang Renjian1 Shen Henggen2 Wang Mingxing1 |
| Abstract: | The diffusional deposition of fine particles of finite diameter on the surface o f a droplet or a raindrop, with and without electrical charges, is estimated by employing thin concentration boundary layer theory. The flow field in the vicini ty of droplets is also predicted by potential flow and Hadamard flow, respective ly. It is found that the mass transfer rate at the forward stagnation point of t he droplet affected by electrostatic forces can be obtained by two dimensionless parameters. If electrostatic effect is negligible, the similitude law for point particle diffusion is different from that of viscous flow. |
| Keywords: | aerosol particle droplet concentr ation boundary layer diffusional deposition |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |