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The Change of Relative Turbulence Intensity Within the Reed Population

[+] Author Affiliations
Yu Jing, Huayong Zhang, Zhongyu Wang, Weigang Xu, Changming Ji, Hua Zhang

North China Electric Power University, Beijing, P.R. China

Paper No. IMECE2010-40783, pp. 397-401; 5 pages
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 8: Dynamic Systems and Control, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4445-8
  • Copyright © 2010 by ASME


The relative turbulence intensity within the natural reed population is studied in this paper. We analyze the changes of turbulence intensity under three conditions corresponding to the different densities of 54, 108, 202 stems per square meter. Results reveal that the flow state in sparse reed population approximates to that in control experiment (no reeds), and the relative turbulence intensity increases with the reed density. Furthermore, the relative turbulence intensity of a measure point is affected by both the longitudinal location of its cross-section and the horizontal distance to the channel wall. Therefore, the relative turbulence intensity becomes more stable when the flow passes through the reed population.

Copyright © 2010 by ASME
Topics: Turbulence



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