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Flow characteristics in open channels with aquatic rigid vegetation

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Abstract

In order to study the flow characteristics in water bodies with rigid aquatic vegetation, series of laboratory experiments are carried out in an open channel, in which glass rods are used as plants with diameters of 6mm, 8mm and 10mm, respectively. For each diameter of glass rods, four typical cases are considered with various densities and arrangements of glass rods. The flow velocities in the four cases are measured by the 3-D laser Doppler velocimeter (LDV). The water surface slope, the flow velocity, the water head loss, the vegetation drag force and the hydraulic slope are calculated, analyzed and discussed. The horizontal, vertical and total vegetation densities in the vegetation area are defined and the relationship between these physical parameters and the water surface slope are studied. The head loss and the hydraulic slope in the vegetation area are also calculated, compared and analyzed. It is indicated that the water surface slope and velocity, the head loss and the hydraulic slope in the vegetation area have a close relationship with the arrangement, the density, and the plant diameter of the vegetation.

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References

  1. Kang H. Flow characteristics and morphological changes in open-channel flows with alternate vegetation zones [J]. KSCE Journal of Civil Engineering, 2013, 17(5): 1157–1165.

    Google Scholar 

  2. Devi T. B., Kumar B. Channel hydrodynamics of submerged, flexible vegetation with seepage [J]. Joural of Hydraulic Engineering, ASCE, 2016, 142(11): 04016053.

    Google Scholar 

  3. Zhang X. On the estimation of biomass of submerged vegetation using Landsat thematic mapper (TM) imagery: A case study of the Honghu Lake, PR China [J]. International Journal of Remote Sensing, 1998, 19(1): 11–20.

    Google Scholar 

  4. Jakubauskas M., Kindscherer K., Eraser A. et al. Close-range remote sensing of aquatic macrophyte vegetation cover [J]. International Journal of Remote Sensing, 2000, 18(21): 3533–3538.

    Google Scholar 

  5. Dekker A. G., Brando V. E., Amstee J. M. Retrospective sea grass change detection in a shallow coastal tidal Australian lake [J]. Remote Sensing of Environment, 2005 97(4): 415–433.

    Google Scholar 

  6. Gullstrom M., Lunden B., Bodin M. et al. Assessment of changes in the seagrass-dominated submerged vegetation of tropical Chwaka Bay (Zanzibar) using satellite remote sensing estuarine [J]. Coastaland Shelf Science, 2006, 67(3): 399–408.

    Google Scholar 

  7. Yuan L., Zhang L. Q. The spectral responses of submerged plant vallisneria spiralis varying biomass using spectroradiometer [J]. Hydrobiologia, 2007, 579: 291–299.

    Google Scholar 

  8. Carollo F. G., Ferro V., Termini D. Flow velocity measurements in vegetated channels [J]. Journal of Hydraulic Engineering, ASCE, 2002, 128(7): 664–673.

    Google Scholar 

  9. Yang K., Cao S., Knight D. W. Flow patterns in compound channels with vegetated floodplains [J]. Journal of Hydraulic Engineering, ASCE, 2007, 133(2): 148–159.

    Google Scholar 

  10. Wu L. H., Yang X. L. Factors influencing bending rigidity of submerged vegetation [J]. Journal of Hydrodynamics, 2011, 23(6): 723–729.

    Google Scholar 

  11. Ricardo A. M., Frnca M. J., Ferreira R. M. L. Turbulent flows within random arrays of rigid and emergent cylinders with varying distribution [J]. Joural of Hydraulic Engineering, ASCE, 2016, 142(9): 04016022.

    Google Scholar 

  12. Liu C., Shan Y., Liu X. et al. The effect of floodplain grass on the flow characteristics of meandering compound cannels [J]. Journal of Hydrology, 2016, 542: 1–17.

    Google Scholar 

  13. Liu C., Nepf H. Sediment deposition within and around a finite patch of model vegetation over a range of channel velocity [J]. Water Resources Research, 2016, 52: 600–612.

    Google Scholar 

  14. Song Y. T., Jing H. F., Zhang K. et al. Experimental study on characteristics of open channel flows with submerged rigid vegetation [J]. Journal of Hydroelectric Engineering, 2018, 38(5):21–32(in Chinese).

    Google Scholar 

  15. Li W. Q., Wang D., Jiao J. L. et al. Effects of vegetation patch density on flow velocity characteristics in an open channel [J]. Journal of Hydrodynamics,. 2019, 31(5): 1052–1059.

    Google Scholar 

  16. Wilson C. A. M. E., Yangci O., Rauch H. P. et al. 3D numerical modelling of a willow vegetated river/floodplain system [J]. Journal of Hydrology, 2006, 327(1–2): 13–21.

    Google Scholar 

  17. Huai W. X., Zeng Y. H., Xu Z. G. et al. Three-layer model for vertical velocity distribution in open channel flow with submerged rigid vegetation [J]. Advances in Water Resources, 2009, 32(4): 487–492.

    Google Scholar 

  18. Huai W., Wang W., Hu Y. Analytical model of the mean velocity distribution in an open channel with double-layered rigid vegetation [J]. Advances in Water Resources, 2014, 69: 106–113.

    Google Scholar 

  19. Kim H. S., Nabi M., Kimura I. et al. Computational modeling of flow and morphodynamics through rigid-emergent vegetation [J]. Advances in Water Resources, 2015, 84: 64–86.

    Google Scholar 

  20. Cai Y. J., Jing H. F., Li C. G. et al. Numerical study of open channel flow with vegetation based on MRT-LBE model [J]. Yellow River, 2017, 10: 15–21(in Chinese).

    Google Scholar 

  21. Liu X., Zhou Q., Sheng H. et al. Estimation of flow direction in meandering compound channels [J]. Journal of Hydrology, 2018, 556: 143–153.

    Google Scholar 

  22. Shan Y., Huang S., Liu C. et al. Prediction of the depth-averaged two-dimensional flow direction along a meander in compound channels [J]. Journal of Hydrology, 2018, 565: 318–330.

    Google Scholar 

  23. Huai W., Yang L., Wang W. et al. Predicting the vertical low suspended sediment concentration in vegetated floe using a random displacement model [J]. Journal of Hydrology, 2019, 578: 1–13.

    Google Scholar 

  24. Jing H. F., Cai Y. J., Wang W. H. et al. Investigation of open channel flow with unsubmerged rigid vegetation by the lattice Boltzmann method [J]. Journal of Hydrodynamics, 2020, 32(4): 771–783.

    Google Scholar 

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Acknowledgments

This work was supported by the Key Project of North Minzu University in China (Grant No. 2019KJ125, 2018XYZSX04), the Project of Key Research and Development Planned by Science and Technology Department of Ningxia, China (Grant No. 2019BEG03048), the Science and Technology Research Projects in Ningxia Higher Education Institutions (Grang No. NGY2018-140). The authors declare that the manuscript does not contain clinical studies or patient data. Reviewers’ comments have greatly improved the quality of the paper.

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Authors and Affiliations

  1. College of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, China

    Yan-jie Wu

  2. School of Civil Engineering, North Minzu University, Yinchuan, 750021, China

    Yan-jie Wu, He-fang Jing, Chun-guang Li & Ying-ting Song

  3. Key Laboratory of Intelligent Information and Big Data Processing of Ningxia Province, Yinchuan, 750021, China

    He-fang Jing & Chun-guang Li

  4. Research Institute of Numerical Computation and Engineering Applications, North Minzu University, Yinchuan, 750021, China

    He-fang Jing & Chun-guang Li

  5. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, 300350, China

    He-fang Jing

Authors
  1. Yan-jie Wu
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  2. He-fang Jing
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  3. Chun-guang Li
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  4. Ying-ting Song
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Corresponding author

Correspondence to Chun-guang Li.

Additional information

Project supported by the National Natural Science Foundation of China (Grant Nos. 11861003, 11761005).

Biography: Yan-jie Wu (1982-), Female, Ph. D. candidate

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Wu, Yj., Jing, Hf., Li, Cg. et al. Flow characteristics in open channels with aquatic rigid vegetation. J Hydrodyn 32, 1100–1108 (2020). https://doi.org/10.1007/s42241-020-0072-7

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  • DOI: https://doi.org/10.1007/s42241-020-0072-7

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