Measurements of mass flux in a turbulent liquid flow with a chemical reaction
Measurements of mass flux in a turbulent liquid flow with a chemical reaction
复制标题
通过化学反应测量湍流液体流中的质量通量
DOI：
10.1002/aic.690391005
复制
发表时间：
1993
期刊：
影响因子：
3.7
通讯作者：
Y. Murakami
中科院分区：
文献类型：
--
作者：
S. Komori;K. Nagata;T. Kanzaki;Y. Murakami
本文提出了一种将双组分He-Ne激光多普勒测速仪与Ar ~+激光诱导荧光技术相结合，同时测量有无化学反应的湍流液流中浓度和速度的新技术。通过对湍流网格下游无剪切混合层中浓度和速度的同时测量，估算了质量通量和质量涡扩散系数。结果表明，目前的测量技术，使我们能够同时测量速度和浓度与高分辨率和平均梯度扩散的近似估计反应液流中的质量通量约10%的误差。
An original technique for simultaneous measurements of concentration and velocity in a turbulent liquid flow with and without a chemical reaction is developed by combining a two-component He-Ne laser Doppler velocimeter with a Ar+ laserinduced fluorescence technique. The mass flux and eddy diffusivity of mass are estimated from the simultaneous measurements of concentration and velocity in a liquid shear-free mixing layer downstream of a turbulence grid. The results show that the present measuring technique enables us to simultaneously measure velocity and concentration with high resolutions and that the approximation of the mean gradient diffusion causes about 10% error in estimating the mass flux in a reacting liquid flow.