标题： 湍流混合的波浪小波互相关分析 显示英文标题

标题： Wavelet Cross-Correlation Analysis of Turbulent Mixing from Large-Eddy-Simulations

摘要： 在钝体稳定火焰配置中，湍流与混合之间存在的复杂相互作用通过大涡模拟的小波交叉相关分析进行研究。 该综合方法能够更准确地指出非定常湍流流动中混合的典型特征，通过表征时间及尺度上的相关过程。 速度和混合分数波动的时间信号的小波交叉相关分析可以作为一种有效工具，用于研究在燃烧问题中具有重要意义的湍流混合过程。 显示英文摘要

摘要： The complex interactions existing between turbulence and mixing in a bluff-body stabilised flame configuration is investigated by means of a wavelet cross-correlation analysis on Large Eddy Simulations. The combined approach allows to better point out typical features of unsteady turbulent flows with mixing through the characterisation of the processes involved both in time and scales. The wavelet cross-correlation analysis of the time signals of velocity and mixture fraction fluctuations can be an an effective tool to study the processes involved in turbulent mixing flows which are of great interest in combustion problems.