水沙数学模型的认知与建立

针对模型认知、选取、网格划分、参数设定、模型率定和验证等方面对水沙数学模型国内外研究成果以及应用经验进行总结归纳,并指出常见误区。水流泥沙数学模型的建立应当以能够反映客观物理过程为出发点,模型使用者需要掌握一定的水流泥沙基础知识,充分了解研究区域的水流泥沙运动情况,合理高效建模。

Cognition and Building of Numerical Model of Flow and Sediment

In order to enhance the cognition and building ability of numerical model of flow and sediment and improve the accuracy and reliability of the model, domestic and international researches about numerical model of flow and sediment and apply experience were summarized in this paper. The summary included aspects, such as cognition of model, choice of model, partition of grids, setting of parameters, calibration and verification of model, correction of common misunderstandings. From this paper, the building of numerical model is suggested to be based on objective physical processes. The model user should grasp basic knowledge of flow and sediment, understand the situation of flow and sediment in study area well and then build the numerical model reasonably and efficiently.