A new idea for modifications to the Muskingum routing model
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Abstract:
Based on the principle of water balance and the hypothesis of linear channel storage, the Muskingum routing model has been in the modifying all the time. In general, the modifying are mainly focused on the differential equation of water balance, the equation of channel storage, and the parameter calibration. On the basis of previous studies, this paper established a modified Muskingum model. In the modified model, the current single period flow was substituted for the combination of historical flows at the same cross section with the combination coefficient of flow. Then, the parameters were calibrated with the Differential Evolution Algorithms. The reach Daheiting Reservoir to Luanxian in Luanhe River was used as a case study. And 10 different flows were selected for simulating and demonstrating the validity of the proposed model and the results suggested the potential improvement in flow simulation.
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