仪器网

欢迎您: 免费注册 仪器双拼网址:www.yiqi.com
首页-资讯-资料-产品-求购-招标-品牌-展会-行业应用-社区-供应商手机版
官方微信
中国仪器网• 行业应用
仪器网/ 行业应用/ 解决方案/ 用PIV方法对气溶胶湍流热扩散过程在大气层环境和实验室

用PIV方法对气溶胶湍流热扩散过程在大气层环境和实验室

点击这里给我发消息
内容节点
概述
实验/设备条件
样品提取
实验/操作方法
实验结果/结论
仪器/耗材清单
We discuss a new phenomenon of turbulent thermal diffusion associated with turbulent transport of aerosols in the atmosphere and in laboratory experiments. The essence of this phenomenon is the appearance of a nondiffusive mean flux of particles in the direction of the mean heat flux, which results in the formation of large-scale inhomogeneities in the spatial distribution of aerosols that accumulate in regions of minimum mean temperature of the
surrounding fluid. This effect of turbulent thermal diffusion
was detected experimentally. In experiments turbulence was
generated by two oscillating grids in two directions of the imposed
vertical mean temperature gradient. We used Particle Image Velocimetry(PIV) to determine the turbulent velocity field, and an Image Processing Technique based on an analysis of the intensity of Mie scattering to determine the spatial distribution of aerosols. Analysis of the intensity of laser light Mie scattering by aerosols showed that aerosols accumulate in the vicinity of the minimum mean temperature due to the effect of turbulent thermal diffusion. 德国LaVision PIV/PLIF粒子成像测速场仪 Imager LX PIV相机 用于粒子成像测速(PIV)的荧光示踪粒子
相关产品
相关解决方案
热门解决方案
最新解决方案
在线留言
官方微信

仪器网微信服务号

扫码获取最新信息


仪器网官方订阅号

扫码获取最新信息

在线客服

咨询客服

在线客服
工作日:  9:00-18:00
联系客服 企业专属客服
电话客服:  400-822-6768
工作日:  9:00-18:00
订阅商机

仪采招微信公众号

采购信息一键获取海量商机轻松掌控