Aiming at the complex boundary in the numerical calculation of flood diversion area, a bevel angle Cartesian method is adopted based on the traditional Cartesian method.

• 摘要针对分蓄洪区水流数值计算中的复杂边界问题，在传统笛卡尔坐标方法的基础上改用斜角笛卡尔方法。