Analysis of turbulent counter gradient transport in stably stratified flow using empirical mode decomposition
In this paper, the velocity and temperature time series of stably stratified turbulent flow, which are obtained from LES are analyzed by Empirical Mode Decomposition, The signals are decomposed into different scales successfiilly. Then the local intermittency measurement and the local CGT are investigated. It is found that the small scales exhibit stronger local intermittency than the larger ones and the global CGT is the competition result between the local CGT and down gradient transport.
Yu-lu Liu Xiang Qiu Yong-xiang Huang Zhi-ming Lu
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1032-1037
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）