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首页> 外文会议>Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research >LOCALLY-ADAPTIVE GRID SYSTEM FOR 3D NUMERICAL SIMULATION OF MEANDER MIGRITION
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LOCALLY-ADAPTIVE GRID SYSTEM FOR 3D NUMERICAL SIMULATION OF MEANDER MIGRITION

机译：用于3D数值模拟的局部自适应网格系统曲折迁移

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摘要

This paper presents the formulation of a locally-adaptive grid system using non-orthogonal grid, which can be applied to simulate the lateral migration in channel bends due to bank erosion. A 3D numerical model of flow and sediment transport was used to simulate the lateral migration of channel meander, based on non-equilibrium transport equations in curvilinear coordinate with collocated grid. The governing equations for flow and sediment transport are solved using the finite volume method (FVM) and the SIMPLEC algorithm with momentum interpolation, This model is able to predict the complex fluvial processes in channel bends, and the simulated evolution process of a channel meander agrees well with experiment measurements.
机译：本文介绍了使用非正交网格的局部自适应网格系统的配方，这可以应用于由于堤岸侵蚀而模拟通道弯曲中的横向迁移。基于曲线坐标与配套网格的非平衡输送方程，使用流动和沉积物传输的3D数值模型来模拟通道曲线的横向迁移。使用有限体积法（FVM）和具有动量插值的简单算法来解决流动和沉积物传输的控制方程，该模型能够预测通道弯曲中的复杂河流过程，以及渠道曲折的模拟演化过程一致良好的实验测量。

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