ON ACCURATE EXPERIMENTAL MEASUREMENTS OF THE DYNAMICS OF LARGE SCALE STRUCTURES IN TURBULENT FLOWS

机译：湍流中大型结构动力学的精确实验测量

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Measuring the dynamics of the large-scale structures in turbulent flows is currently a significant challenge. One technique used to extend current experimental capabilities is to use Linear Stochastic Estimation and Proper Orthogonal Decomposition as complementary techniques to examine the dynamics of the energetic motions. Heretofore, it has not been possible to assess the accuracy of this technique without measuring the full velocity field. It is demonstrated here that the accuracy of the technique can be assessed a priori using a transfer function that relates the estimated and actual POD coefficients for the flow.

机译：目前，测量湍流中大型结构的动力学是一项重大挑战。一种用于扩展当前实验能力的技术是使用线性随机估计和正确的正交分解作为补充技术来检查高能运动的动力学。迄今为止，在不测量全速场的情况下不可能评估该技术的准确性。在此证明，可以使用传递函数来预先评估技术的准确性，该传递函数将流的估计POD系数和实际POD系数相关联。

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来源
《IUTAM Symposium on Turbulent Mixing and Combustion, Jun 3-6, 2001, Kingston, Ontario, Canada》|2001年|p.73-83|共11页
会议地点 Kingston(CA)
作者
Dan Ewing; Scott Woodward;
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作者单位

Department of Mechanical Engineering, McMaster University, Hamilton ON, L8S 4L7, Canada;

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会议组织
原文格式 PDF
正文语种 eng
中图分类力学;
关键词
large-scale structures; linear stochastic estimation; proper orthogonal decomposition;

机译：大型结构；线性随机估计；适当的正交分解;

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ON ACCURATE EXPERIMENTAL MEASUREMENTS OF THE DYNAMICS OF LARGE SCALE STRUCTURES IN TURBULENT FLOWS

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