LDV measurements of a flow in a strongly-curved elbow under a high Reynolds number condition

Iwamoto, Yukiharu*; Minamiura, Hirotaka*; Sogo, Motosuke*; Yamano, Hidemasa

Detailed results of LDV measurement for Reynolds number of 50000 is shown. Frequency analyses of axial velocities indicate that two kinds of flow fluctuations exist in the present elbow. One is the fluctuation with approximate Strouhal number (based on a pipe inner diameter and a bulk velocity) of 1.0 occurring in a shear flow region. The other is with approximate Strouhal number of 0.5 occurring in the separated and its downstream regions. These fluctuations were also observed by flow visualization.

Language	:	Japanese
Journal	:	Nihon Kikai Gakkai Rombunshu, B
Volume	:	76
Number	:	765
Pages	:	p.830 - 838
Publication Year/Month	:	2010/05
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Cooperating Institute	:	愛媛大学

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Registration No. : AA20090561
JAEA Abstracts No. : 38001213
Paper Submission No. : 7869

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