摘要
本文对几种常用的检测湍流猝发的条件采样方法，如ｍｕ－ｌｅｖｅｌ法，ＶＩＴＡ法，ＷＡＧ法，（ｕｖ）＿２法的特点及对门限的敏感性进行了研究．并用不同方法对同一组湍流数字信号进行条件采样和条件平均，针对猝发的特征，对使用不同的条件采样方法以得到一致检测结果的途径进行了探讨．
A comparision of the effectiveness and sensitivity of the mu-level, VITA,WAG,(uv)_2 burst-detection algorithms has been done. Measurements were made in a waterchannel using hot-film X-probes located in the near-wall region of a flat plate. Same setof data are used in the study with conditional sampling and conditional averages. Theapproach of acquiring the unique average bursting period are discussed.
出处
《力学学报》
EI
CSCD
北大核心
1994年第4期488-493,共6页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金
关键词
猝发
湍流
粘性流体力学
边界层
oherent Structure, Burst, Conditional Sampling, Conditional Average
