Numerical Modeling of Inflow into a Wet Bed with Complex Free-Surface Interactions using a Weakly Compressible Smoothed Particle Hydrodynamics Method

Jelvehgar, Faramarz; Mahdizadeh, Hossein; Mollazadeh, Mahdi; Shakibaeinia, Ahmad

doi:10.22034/ewe.2022.356038.1800

Document Type : Research Paper

Authors

¹ M.Sc. Student, Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

² Assoc. Professor, Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

³ Assist. Professor, Department of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

⁴ Assoc. Professor, Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Montréal, Canada

https://doi.org/10.22034/ewe.2022.356038.1800

Abstract

The interaction between the surface flood and the drainage system’s outflow is an important source of uncertainty in urban flood modeling. In the present study, the Weakly Compressible Smoothed Particle Hydrodynamics method was used to model the outflow from the drainage system, considering the effect of its interaction with the surface flood. To perform modeling, a new open boundary condition was defined. First, an experimental problem of dam-break propagation over a wet bed was modeled and the numerical results were compared with the experimental data. Investigations showed that the average error of the numerical model is about 2% and its maximum error is less than 4%. Then, to control the efficiency of the defined open boundary conditions, a problem of jet injection into the water tank was investigated. It was observed that the results of the numerical model are in good agreement with the experimental data. Finally, the problem of the inflow from the bottom and its interaction with the flow caused by the dam break was modeled and its results were interpreted and compared with a volume of the fluid numerical model. In general, the results showed that the developed numerical model has an acceptable accuracy in simulating complex flows.

Keywords

Main Subjects

Hydraulic and river engineering

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Environment and Water Engineering

Numerical Modeling of Inflow into a Wet Bed with Complex Free-Surface Interactions using a Weakly Compressible Smoothed Particle Hydrodynamics Method

References

References

Volume 9, Issue 1
March 2023
Pages 109-126

Numerical Modeling of Inflow into a Wet Bed with Complex Free-Surface Interactions using a Weakly Compressible Smoothed Particle Hydrodynamics Method

References

References

Volume 9, Issue 1March 2023Pages 109-126

Volume 9, Issue 1
March 2023
Pages 109-126