The hybrid grid system consists of orthogonal bodyfitted curvilinear coordinate in horizontal dimension and cartesians coordinate in vertical dimension . two numerical computation examples were adapted to test the simulating method and simulated results were compared with experimental data 计算结果表明，对具有复杂几何边界的泵站前池水流，特别是前池中设置几何尺寸相对较小的底坎、导致墩等情况，方法非常适合。
