Confidence intervals in the determination of turbulence parameters
Confidence intervals in the determination of turbulence parameters
复制标题
DOI：
10.1007/s00348-005-0091-8
复制
发表时间：
2006-04-01
影响因子：
2.4
通讯作者：
Garcia, MH
中科院分区：
文献类型：
--
作者：
Garcia, CM;Jackson, PR;Garcia, MH
本文采用移动块引导技术（MBB）量化湍流参数的不确定性。这种技术提供了一个很好的近似的置信区间的湍流参数，如时间和长度尺度的湍流，对流速度和耗散的湍流动能，不能估计的基础上，现有的标准方法，因为它们的计算复杂性和依赖于信号中的相关结构。该验证包括MBB和分析和实验数据的各种参数的不确定性估计值之间的比较。
This paper quantifies uncertainty in turbulence parameters using the moving block bootstrap technique (MBB). This technique provides a good approximation of confidence intervals of turbulence parameters such as time and length scales of the turbulent flow, convective velocities and dissipation of turbulent kinetic energy which cannot be estimated based on the available standard methodology because of their computational complexity and reliance on correlation structure in the signal. The validation consisted of a comparison between uncertainty estimates of various parameters from MBB and those from analytical and experimental data.