Study on One-dimensional Hydrodynamic Model with Parameter Estimation Function
The water transfer project requires more accurate and stable hydrodynamic simulation.An one-dimensional hydrodynamic model with second-order accuracy in both time and space is established by discretizing Saint-Venant equations system using the TVD MUSCL-Hancock finite volume scheme.The parameter estimation problem in this model is transformed into an optimization problem,and a parameter estimation method is established based on particle swarm optimization.The computational accuracy of the hydrodynamic model is verified by classical cases,and the reliability of the parameter estimation model is tested by model experiments.The results show that the hydrodynamic model is accurate and stable.And the particle swarm optimization method has a strong global optimization-seeking capability for parameter estimation under unsteady channel flow.
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