摘要
本文用立体摄影方法研究了小型热浮力烟流的铅直扩散特征,结果表明:热浮力烟流的铅直扩散能力受自生湍流的影响较大:自生湍流的作用随距离的增加而减小;在近源处,自生湍流的作用随大气稳定程度的增加而增大.因此进行近源处污染浓度预测时,必须考虑热浮力烟流自生湍流的作用.
This paper reports the vertical diffusion features of small-type thermal flow smoke plume.The results show that the capability of vertical diffusion of thermal flow smoke plume is more affected by self-produced turbulence at proximal distance,while the effect of self-produced turbulence dicreases with the increase of the distance, and the effect of self-produced turbulence at proximal source increa- ses with the increase of stability.When calculating pollutant con- centration at proximal source,this effect should be considered.
出处
《山东师范大学学报（自然科学版）》
CAS
1990年第1期53-59,共7页
Journal of Shandong Normal University(Natural Science)
关键词
热浮力烟流
扩散
铅直扩散
烟流
atmospheric environmentc
thermal flow smoke plume
self-produced turbulence
ability of vertical diffusion
