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孙葵花, 舒玮. 湍流猝发的检测方法[J]. 力学学报, 1994, 26(4): 488-493. DOI: 10.6052/0459-1879-1994-4-1995-572
引用本文: 孙葵花, 舒玮. 湍流猝发的检测方法[J]. 力学学报, 1994, 26(4): 488-493. DOI: 10.6052/0459-1879-1994-4-1995-572
ON THE BURST DETECTION TECHNIQUES IN WALL-TURBULENCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 1994, 26(4): 488-493. DOI: 10.6052/0459-1879-1994-4-1995-572
Citation: ON THE BURST DETECTION TECHNIQUES IN WALL-TURBULENCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 1994, 26(4): 488-493. DOI: 10.6052/0459-1879-1994-4-1995-572

湍流猝发的检测方法

ON THE BURST DETECTION TECHNIQUES IN WALL-TURBULENCE

  • 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.

     

    Abstract: 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.

     

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