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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

QUANTITATIVE VISUALIZATION OF THE NEAR-WALL STRUCTURES IN A FULLY DEVELOPED TURBULENT PIPE FLOW

pages 33-35
DOI: 10.1615/TSFP2.50
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摘要

In this paper the quantitative properties of the near-wall structure in a fully developed turbulent pipe flow are investigated by DPIV and ICV techniques at Reynolds number 5500. The results show that the near-wall structure visualized by conventional dyes is dominated by ejection events. The quantitative measurements of velocity fluctuations inside the structure indicates the interpretation of flow visualization pictures should be with caution.

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