三峡工程引航道通航水流数值模拟应用研究

采用二维非恒定流数学模型,模拟了三峡工程上游和下游引航道在不同布置方案和各种枢纽运行方式下的引航道内非恒定水流.研究了坐标变换、网格划分、数值离散、动水边界及干床处理、计算成果可视化等关键技术,提出了处理方法.计算表明该数学模型稳定性好、收敛快、精度高;计算成果与模型试验成果较为吻合.

Numerical simulation on navigable flow in Approach Channel of Three Gorges Project

The 2D unsteady flow mathematical model is used to simulate the unsteady flow condition in the upstream and downstream approach channels of TGP corresponding to different layout schemes and different operating modes;The problems on coordinate transformation,grid generation,numerical discretion,movable river boundary and dry river bed simulation and computation data visulization are studied,and the means for settling these key problems are proposed; The merits of this numerical model,such as good stability,quick convergence and high accuracy, are displayed in the computation, the result coincides with that of hydmulic model test.