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Cai, X., Li, P., Yang, Z., Huang, L., Wei, Y.Turbulence intensity of real tangential velocity in circular pipe(2014) Huagong Xuebao/CIESC Journal, 65 (11), pp. 4278-4284.

a Department of Chemical Engineering, Xinjiang Institute of EngineeringUrumqi, Xinjiang, Chinab School of Chemical Engineering, China University of PetroleumBeijing, China

AbstractThe real tangential velocity of swirling flow in a circular pipe with diameter 300 mm and length 2000 mm wasmeasured by using hot wire anemometry (HWA), and analysis emphasized on turbulence intensity of the tangentialvelocity with the effect of oscillation of swirling flow. The real tangential velocity contained high frequency turbulentfluctuation velocity and low frequency fluctuation velocity. The real tangential velocity fluctuated obviously in the centerregion of the circular pipe, but fluctuated little near the wall of the circular pipe. By analyzing probability density of thereal tangential velocity of swirling flow, fluctuation of the real tangential velocity changed greatly along the radialdirection. This fluctuation was not only affected by turbulent fluctuation, but also by oscillation of swirling flow.Oscillation of swirling flow resulted in the phenomenon that turbulence intensity of the tangential velocity in the centerregion was higher than that near the wall.

Author KeywordsCircular pipe; Swirling flow; Turbulence flow; Turbulence intensity

Index KeywordsOscillating flow, Probability density function, Swirling flow, Turbulence; Circular pipe, Hot wire anemometry, LowFrequency Fluctuations, Probability densities, Tangential velocities, Turbulence flow, Turbulence intensity, Turbulentfluctuation; Velocity

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Correspondence Address Wei Y.; Department of Chemical Engineering, Xinjiang Institute of EngineeringChina

Publisher: Chemical Industry Press

ISSN: 04381157CODEN: HUKHADOI: 10.3969/j.issn.0438-1157.2014.11.009Language of Original Document: ChineseAbbreviated Source Title: Huagong XuebaoDocument Type: ArticleSource: Scopus