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Acta Mechanica Sinica

, Volume 5, Issue 4, pp 313–322 | Cite as

Numerical simulation of 3-D turbulent flows over dredged trenches

  • Han Guoqi
  • Wang Deguan
  • Xu Xieqing
Article
  • 4 Downloads

Abstract

A 3-D free surface flow in open channels based on the Reynolds equations with thek-ε turbulence closure model is presented in this paper. Insted of the “rigid lid” approximation, the solution of the free surface equation is implemented in the velocity—pressure iterative procedure on the basis of the conventional SIMPLE method. This model was used to compute the flow in rectangular channels with trenches dredged across the bottom. The velocity, eddy viscosity coefficient, turbulent shear stress, turbulent kinetic energy and elevation of the free surface can be obtained. The computed results are in good agreement with previous experimental data.

Key Words

3-D surface water flow model dredged trenches k-ε turbulence model numerical simulation 

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References

  1. [1]
    Koutitas, M., and O'connor B., Turbulence model for flow over dredged channels,J. of Hydraulics Div., ASCE, 107, HY8 (1981)989–1002.Google Scholar
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    Alfrink, B. J., and Rijn, L. C. van, Two—equation turbulence model for flow in trenches,J.of the Hydraulics Div., ASCE, 105, HY5 (1979), 461–476.Google Scholar
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    Li Wei, Liu Zhongchao, and Chen HechunJ. of Hydraulic Engineering.2 (1988), 18–26 (in Chinese).zbMATHGoogle Scholar
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    Benque, J. P., et al., Tidal Flow Engineering Applications of Computational Hydraulics, Pitman Publishing Inc. Part 1, 2 (1982).Google Scholar

Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1989

Authors and Affiliations

  • Han Guoqi
    • 1
  • Wang Deguan
    • 1
  • Xu Xieqing
    • 1
  1. 1.Department of Environmental EngineeringHohai UniversityNanjing

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