水流和泥沙问题数值模拟与工程应用

Numerical analysis of flow and sediments and engineering application

建立一种计算对流占优及强间断问题的高分辨率格式 ,该格式与流动微分方程的离散过程相互独立 .通过离散系数的重构 ,达到提高精度避免数值振荡的目的 ,可方便地应用于多维与非结构化网格系统 .与溃坝问题的理论解吻合良好 ,并在实际工程应用中进行了验证对比 .对水流。

A high resolution scheme is developed for the computation of convection dominated or discontinuous flow problems. The implementation of the scheme is independent of discretization itself and can be considered as reconstruction to the coefficient matrix of the original algebraic system, therefore, either structured or unstructured meshes can conveniently use it. Comparison between analytic solution and measured data in practical application were made and they agree quite well. Automatic grid generation and flow visualization are also discussed in the paper.