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Lattice Boltzmann Method for Simulating Flows in Open-channel with Partial Emergent Rigid Vegetation Cover

  • Zhong-hua Yang (杨中华)
  • Feng-peng Bai (白凤朋)
  • Wen-xin Huai (槐文信)
  • Cheng-guang Li (李成光)
Article
  • 15 Downloads

Abstract

Flows in open-channel with partial emergent rigid vegetation cover are simulated using the Lattice Boltzmann method based on two dimensional 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, which shows suitable agreement.

Key words

Open-channel flow rigid vegetation Lattice Boltzmann method shallow water equations vegetation roughness coefficient 

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Copyright information

© China Ship Scientific Research Center 2018

Authors and Affiliations

  • Zhong-hua Yang (杨中华)
    • 1
  • Feng-peng Bai (白凤朋)
    • 1
  • Wen-xin Huai (槐文信)
    • 1
    • 2
  • Cheng-guang Li (李成光)
    • 3
  1. 1.State Key Laboratory of Water Resources and Hydropower Engineering ScienceWuhan UniversityWuhanChina
  2. 2.Changjiang Water Resources Protection InstituteWuhanChina
  3. 3.Shandong Provincial Key Laboratory of Water Resources and Water EnvironmentWater Resources Research Institute of Shandong ProvinceJinanChina

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