Skip to main content
SpringerLink
Log in

The characteristics of secondary flows in compound channels with vegetated floodplains

  • Published:
Journal of Hydrodynamics Aims and scope Submit manuscript

Abstract

The experiments were conducted in compound channels with vegetated floodplains for investigating the influence of vegetation types on the characteristics of secondary flows. In terms of the streamwise and transverse velocities and the depth-averaged velocity, the secondary flow coefficient, M, is proposed, with good physical meanings, and it may characterize the rotational direction and the intensity of the secondary currents. The experimental results show that, for the cases without vegetation and with grass, the rotational directions of the secondary flows are all anticlockwise while for the cases with shrubs, they are all changed to the clockwise direction in the whole cross-section. However, when trees are planted, the secondary flows rotate in the anticlockwise direction in the main channel and in the clockwise direction on the floodplain. In addition, for all cases, the intensities of the secondary currents on the floodplain are stronger than those in the main channel.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. SANJOU M., NEZU I. and SUZUKI S. et al. Turbulence structure of compound open-channel with one-line emergent vegetation[J]. Journal of Hydrodynamics, 2010, 22(5Suppl.): 577–581.

    Article  Google Scholar 

  2. SANJOU M., NEZU I. Large eddy simulation of compound open-channel flows with emergent vegetation near the floodplain edge[J]. Journal of Hydrodynamics, 2010, 22(5Suppl.): 582–586.

    Article  Google Scholar 

  3. WHITE B. L., NEPF H. D. Shear instability and coherent structures in shallow flow adjacent to a porous layer[J]. Journal of Fluid Mechanics, 2007, 593: 1–32.

    Article  Google Scholar 

  4. JAMES C. S., BIRKHEAD A. L. and JORDANOVA A. A. et al. Flow resistance of emergent vegetation[J]. Journal of Hydraulic Research, 2004, 42(4): 390–398.

    Article  Google Scholar 

  5. SHIONO K., CHAN T. L. and SPOONER J. et al. The effect of floodplain roughness on flow structures, bedforms and sediment transport rates in meandering channels with overbank flows: Part I[J]. Journal of Hydraulic Research, 2009, 47(1): 5–19.

    Article  Google Scholar 

  6. SHIONO K., CHAN T. L. and SPOONER J. et al. The effect of floodplain roughness on flow structures, bedforms and sediment transport rates in meandering channels with overbank flows: Part II[J]. Journal of Hydraulic Research, 2009, 47(1): 20–28.

    Article  Google Scholar 

  7. YANG K., NIE R. and LIU X. et al. Modeling depthaveraged velocity and boundary shear stress in rectangular compound channels with secondary flows[J]. Journal of Hydraulic Engineering, 2013, 139(1): 76–83.

    Article  Google Scholar 

  8. HU C., JI Z. and GUO Q. Flow movement and sediment transport in compound channels[J]. Journal of Hydraulic Research, 2010, 48(1): 23–32.

    Article  Google Scholar 

  9. YANG S. Q., YU J. X. and WANG Y. Z. Estimation of diffusion coefficients, lateral shear stress, and velocity in open channels with complex geometry[J]. Water Resources Research, 2004, 40(5): W05202.

    Google Scholar 

  10. TANG X., KNIGHT D. W. Analytical models for velocity distributions in open channel flows[J]. Journal of Hydraulic Research, 2009, 47(4): 418–428.

    Article  Google Scholar 

  11. RAMESHWARAN P., SHIONO K. Quasi two-dimensional model for straight overbank flows through emergent vegetation on floodplains[J]. Journal of Hydraulic Research, 2007, 45(3): 302–315.

    Article  Google Scholar 

  12. KNIGHT D. W., OMRAN M. and Tang X. Modeling depth-averaged velocity and boundary shear in trapezoidal channels with secondary flows[J]. Journal of Hydraulic Engineering, ASCE, 2007, 133(1): 39–47.

    Article  Google Scholar 

  13. TANG X., KNIGHT D. W. and STERLING M. Analytical model of streamwise velocity in vegetated channels[J]. Engineering and Computational Mechanics, 2011, 164(2): 91–102.

    Google Scholar 

  14. ERVINE D. A., BABAEYAN-KOOPAEI K. and SELLIN R. H. J. et al. Two-dimensional solution for straight and meandering overbank flows[J]. Journal of Hydraulic Engineering, ASCE, 2000, 126(9): 653–669.

    Article  Google Scholar 

  15. HUAI Wei-xin, GAO Min and ZENG Yu-hong et al. Two-dimensional analytical solution for compound channel flows with vegetated floodplains[J]. Applied Mathematics and Mechanics (English Edition), 2009, 30(9): 1121–1130.

    Article  Google Scholar 

  16. LIU Chao, YANG Ke-jun and LIU Xing-nian et al. Analytical models for overbank flows in meandering channels with vegetated floodplains[J]. Journal of Sichuan University (Engineering Science Edition), 2012, 44(6): 7–12(in Chinese).

    MathSciNet  Google Scholar 

  17. HUAI W. X., ZENG Y. H. and XU. Z. G. et al. Threelayer model for vertical velocity distribution in open channel flow with submerged rigid vegetation[J]. Advances in Water Resources, 2009, 32(4): 487–492.

    Article  Google Scholar 

  18. HUAI Wen-xin, CHEN Zheng-bing and HAN Jie et al. Mathematical model for the flow with submerged and emerged rigid vegetation[J]. Journal of Hydrodynamics, 2009, 21(5): 722–729.

    Article  Google Scholar 

  19. HUTHOFF F., AUGUSTIJN D. C. M. and HULSCHER S. J. M. H. Analytical solution of the depth-averaged flow velocity in case of submerged rigid cylindrical vegetation[J]. Water Resources Research, 2007, 43(6): W06413.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China

    Chao Liu  (刘超), Ke-jun Yang  (杨克君) & Xing-nian Liu  (刘兴年)

  2. College of Mathematics, Sichuan University, Chengdu, 610065, China

    Yu-qi Shan  (单钰淇)

Authors
  1. Chao Liu  (刘超)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yu-qi Shan  (单钰淇)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Ke-jun Yang  (杨克君)
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Xing-nian Liu  (刘兴年)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ke-jun Yang  (杨克君).

Additional information

Project supported by the National Natural Science Foundation of China (Grant Nos. 11072161, 50709021), the National Science and Technology Ministry (Grant No. 2012BAB05B02) and the National Excellent Doctoral Dissertation of China (Grant No. 201051).

Biography: LIU Chao (1987- ), Male, Ph. D. Candidate

Rights and permissions

Reprints and permissions

About this article

Cite this article

Liu, C., Shan, Yq., Yang, Kj. et al. The characteristics of secondary flows in compound channels with vegetated floodplains. J Hydrodyn 25, 422–429 (2013). https://doi.org/10.1016/S1001-6058(11)60381-9

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1016/S1001-6058(11)60381-9

Key words

Search

Navigation