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Lattice Boltzmann method for simulating flows in open-channel with partial emergent rigid vegetation cover

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Abstract

Flows in open-channel with partial emergent rigid vegetation cover are simulated using the lattice Boltzmann method (LBM) described by the 2-D nonlinear shallow water equations. The effect of vegetation is represented with the vegetation roughness coefficient, which is related to the vegetation density, diameter of the vegetation elements and drag coefficient. The model is verified by three numerical tests: flow in a 180° curved open channel with partial vegetation cover at the outer bank, flow in a rectangular channel with a finite patch of vegetation and flow in a rectangular channel with a vegetated bank. Numerical results are compared with the experimental data, and the good agreement proved that the presented model can model the vegetated channel flows correctly.

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Authors and Affiliations

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

    Zhong-hua Yang, Feng-peng Bai & Wen-xin Huai

  2. Changjiang Water Resources Protection Institute, Wuhan, 430051, China

    Feng-peng Bai

  3. Shandong Provincial Key Laboratory of Water Resources and Water Environment, Water Resources Research Institute of Shandong Province, Jinan, 250013, China

    Cheng-guang Li

Authors
  1. Zhong-hua Yang
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  2. Feng-peng Bai
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  3. Wen-xin Huai
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  4. Cheng-guang Li
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Corresponding author

Correspondence to Wen-xin Huai.

Additional information

Project supported by the CRSRI Open Research Program (Grant No. CKWV2017501/KY), the National Nature Science Foundation of China (Grant Nos. 51679170, 51879199 and 51439007).

Biography: Zhong-hua Yang (1977-), Male, Ph. D., Professor

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Yang, Zh., Bai, Fp., Huai, Wx. et al. Lattice Boltzmann method for simulating flows in open-channel with partial emergent rigid vegetation cover. J Hydrodyn 31, 717–724 (2019). https://doi.org/10.1007/s42241-018-0157-8

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  • DOI: https://doi.org/10.1007/s42241-018-0157-8

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