畦灌水流运动的零惯量数值模拟及其应用

Zero-Inertia Mathematical Model and Application of Border Irrigation in Flow

本文用零惯量数学模型对畦灌田面水流运动的全过程进行了描述，对水流推进阶段采用四边形曲线差分网格公式，退水阶段采用矩形差分网格公式，并采用普赖斯曼追赶法和牛顿－拉普逊迭代法进行数值计算。经田间试验实测资料验证，模型计算结果与试验资料吻合较好，最后对数学模型的实际应用进行了初步探讨。

In this paper, the whole process of flow in border irrigation is simulated mathematically withzero-inertia. Quadrillateral curved cell in advance and rectanguler in Recession, double sweep andNewton-Raphson calculation method ate applied for numberical calculation agreeing with the curves from irrigation experiment in the field. Finally, the application of the model is discussed.