Application of Two-dimensional Mathematical Flow Model in the Flood Control Impact Assessment for Construction Project in High Standard Flood Diversion Area of Hutuo River
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Abstract:
The Leibniz integral was performed on the three-dimensional Reynolds equation along the water depth to obtain the two-dimensional unsteady flow equation, which was used to develop the flood routing mathematical model in the Hutuo River. Based on the boundary conditions, flood standards, and the effects of tiny terrain in the study area, suitable water dynamics method was used to calculate the flood discharge and real-time flood level. The method of array tracking was applied in the process of moving boundary to improve the computational efficiency. The “96?8” flood data of the Hutuo River were used to verify the model, and the results showed good agreement between the simulated and measured data. On this basis, the flood situations before and after the golf course construction were simulated in the flood diversion area of the Hutuo River under the flood discharge conditions with different standards, which can characterize the impacts of the construction project on the flood discharge. The simulation results indicated that the model design is reasonable and the model has a certain reliability and practicability.
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