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논문 기본 정보

자료유형
학술저널
저자정보
Yukiharu Iwamoto (Ehime University) Ryo Kusuzaki (Ehime University) Motosuke Sogo (Ehime University) Kazunori Yasuda (Ehime University) Hidemasa Yamano (Japan Atomic Energy Agency) Masaaki Tanaka (Japan Atomic Energy Agency)
저널정보
한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.10 No.1
발행연도
2017.3
수록면
76 - 85 (10page)
DOI
10.5293/IJFMS.2017.10.1.076

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초록· 키워드

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Wall pressure measurements and flow visualization were conducted for a 90 degree elbow with an axis curvature radius the same as its inner diameter (125 mm). Reynolds numbers 320,000 and 500,000, based on the inner diameter and bulk velocity, were examined. A deflected inflow, having an almost constant velocity slope and a faster velocity at the inside, was introduced. Ensemble averaged pressure distributions showed that no difference of normalized pressure could be found in both the Reynolds number cases. Power spectral density functions of pressures exhibited that the fluctuation having the Strouhal number (based on the inner diameter and bulk velocity) of 0.6 existed in the downstream region of the elbow, which was 0.1 larger than that of the uniform inflow case [1]. Results of numerical calculations qualitatively coincided with the experimental ones.

목차

Abstract
1. Introduction
2. Experimental Method
3. Numerical Method
4. Results and Discussion
5. Conclusions
References

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