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Characteristics of Flow Movement in Complex Canal System and Its Influence on Sudden Pollution Accidents

Author

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  • Maoyi Luo
  • Faxing Zhang
  • Zhaoming Song
  • Liyuan Zhang

Abstract

This study aimed to determine the split ratio, flow-field structure, and effect of different shaped channels to sudden pollution accidents in a generalized complex canal system of a wetland park, both experimentally and numerically. The three-dimensional instantaneous velocities at a typical section of each channel in the generalized model were measured experimentally using an acoustic Doppler velocimeter. The results showed that the split ratio calculation formula of three parallel channels could be derived under the condition of considering the frictional head and the local head losses. The water depth, velocities, and pollutant diffusion were widely influenced by changes in the cross-sectional shape and channel plane shape. The pollutants were trapped by stable vortices and transverse circulation due to shear force and secondary flow, thus delaying the diffusion of pollutants. The research results reported herein can help provide technical support for the normal operation of complex canal systems.

Suggested Citation

  • Maoyi Luo & Faxing Zhang & Zhaoming Song & Liyuan Zhang, 2021. "Characteristics of Flow Movement in Complex Canal System and Its Influence on Sudden Pollution Accidents," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-15, April.
    • Handle: RePEc:hin:jnlmpe:6617385
    DOI: 10.1155/2021/6617385
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