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Numerical investigation of flow through vegetated multi-stage compound channel

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Abstract

This paper addresses the problem of the renormalization group k - ε turbulence modeling of a vegetated multi-stage compound channel. Results from Micro acoustic Doppler velocimeter (ADV) tests are used with time and spatial averaging (doubleaveraging method) in the analysis of the flow field and the characterization. Comparisons of the mean velocity, the Reynolds stress, and the turbulent energy distribution show the validity of the computational method. The mean velocity profile sees an obvious deceleration in the terraces because of vegetation. Secondary flow exists mainly at the junction of the main channel and the vegetation region on the first terrace. The bed shear stress in the main channel is much greater than that in the terraces. The difference of the bed shear stress between two terraces is insignificant, and the presence of vegetation can effectively reduce the bed shear stress.

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References

  1. ABRIL J. B., KNIGHT D. W. Stage-discharge prediction for rivers in flood applying a depth-averaged model[J]. Journal of Hydraulic Research, 2004, 42(6): 616–629.

    Article  Google Scholar 

  2. WU W., HE Z. Effects of vegetation on flow conveyance and sediment transport capacity[J]. International Journal of Sediment Research, 2009, 24(3): 247–259.

    Article  Google Scholar 

  3. ABERNETHY B., RUTHERFURD I. D. The distribution and strength of riparian tree roots in relation to riverbank reinforcement[J]. Hydrological Processes, 2001, 15(1): 63–79.

    Article  Google Scholar 

  4. WU W., SHIELDS F. D. and BENNETT S. J. et al. A depth-averaged two-dimensional model for flow, sediment transport, and bed topography in curved channels with riparian vegetation[J]. Water Resources Research, 2005, 41(3): 1–15.

    Article  Google Scholar 

  5. WU W., MARSOOLI R. A depth-averaged 2D shallow water model for breaking and non-breaking long waves affected by rigid vegetation[J]. Journal of Hydraulic Research, 2012, 50(6): 558–575.

    Article  Google Scholar 

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

    Article  Google Scholar 

  7. HAMIDIFAR H., OMID M. H. Floodplain vegetation contribution to velocity distribution in compound channels[ J]. Journal of Civil Engineering and Urbanism, 2013, 3(6): 357–361.

    Google Scholar 

  8. CHEN Gang. HUAI Wen-xin and HAN Jie et al. Flow structure in partially vegetated rectangular channels[J]. Journal of Hydrodynamics, 2010, 22(4): 590–597.

    Article  Google Scholar 

  9. WU W., ZHANG M. and OZEREN Y. et al. Analysis of vegetation effect on waves using a vertical 2D RANS model[J]. Journal of Coastal Research, 2012, 29(2): 383–397.

    Google Scholar 

  10. SOULIOTIS D., PRINOS P. Effect of a vegetation patch on turbulent channel flow[J]. Journal of Hydraulic Research, 2011, 49(2): 157–167.

    Article  Google Scholar 

  11. ELGHANDURI N. E. CFD analysis for turbulent flow within and over a permeable bed[J]. American Journal of Fluid Dynamics, 2012, 2(5): 78–88.

    Article  Google Scholar 

  12. PRINOS P., SOFIALIDIS D. and KERAMARIS E. Turbulent flow over and within a porous bed[J]. Journal of Hydraulic Engineering, ASCE, 2003, 129(9): 720–733.

    Article  Google Scholar 

  13. WANG Wen. HUAI Wen.xin and ZENG Yu-hong. Experimental study on the flow characteristics of multistage compound channel with vegetation on its floodplains[ J]. Journal of Huazhong University of Science and Technology (Nature Science Edition), 2013, 41(10): 128–132(in Chinese).

    Google Scholar 

  14. NIKORA V., MCEWAN I. and MCLEAN S. et al. Double-averaging concept for rough-bed open-channel and overland flows: Theoretical background[J]. Journal of Hydraulic Engineering, ASCE, 2007, 133(8): 873–883.

    Article  Google Scholar 

  15. FINNIGAN J. Turbulence in plant canopies[J]. Annual Review of Fluid Mechanics, 2000, 32(1): 519–571.

    Article  Google Scholar 

  16. HUAI Wen-xin, LI Cheng-guang, ZENG Yu-hong et al. Curved open channel flow on vegetation roughened inner bank[J]. Journal of Hydrodynamics, 2012, 24(1): 124–129.

    Article  Google Scholar 

  17. NEZU I., SANJOU M. Turburence structure and coherent motion in vegetated canopy open-channel flows[J]. Journal of Hydro-Environment Research, 2008, 2(2): 62–90.

    Article  Google Scholar 

  18. NEZU I., ONITSUKA K. Turbulent structures in partly vegetated open-channel flows with LDA and PIV measurements[J]. Journal of Hydraulic Research, 2001, 39(6): 629–642.

    Article  Google Scholar 

  19. CRAWLEY D. M., NICKLING W. G. Drag partition for regularly-arrayed rough surfaces[J]. Boundary-Layer Meteorology, 2003, 107(2): 445–468.

    Article  Google Scholar 

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Authors and Affiliations

  1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China

    Wen Wang  (王雯), Wen-xin Huai  (槐文信) & Meng Gao  (高猛)

Authors
  1. Wen Wang  (王雯)
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  2. Wen-xin Huai  (槐文信)
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  3. Meng Gao  (高猛)
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Corresponding author

Correspondence to Wen-xin Huai  (槐文信).

Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 11372232), the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20130141110016) and the State Water Pollution Control and Management of Major Special Science and Technology (Grant No. 2012ZX07205-005-03).

Biography: WANG Wen (1986-), Male, Ph. D. Candidate

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Wang, W., Huai, Wx. & Gao, M. Numerical investigation of flow through vegetated multi-stage compound channel. J Hydrodyn 26, 467–473 (2014). https://doi.org/10.1016/S1001-6058(14)60053-6

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  • DOI: https://doi.org/10.1016/S1001-6058(14)60053-6

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