波涌灌田面行水流动的数值模拟及其灌水技术

根据连续方程，零惯性的动量方程以及最佳灌水状态概念，建立了描述波涌灌田面行水流动的零惯性模型，用Ｎｅｗｔｏｎ－Ｒａｐｈａｏｎ和Ｐｒｅｉｓｓｍａｎ法对模型求解实现了波涌灌田面行水流动的模拟，探讨了波涌灌田间入渗和行水机理。用计算机模拟试验的方法，研究了波涌灌灌水技术参数对灌溉系统性能的影响，提出了确定波涌灌灌水技术参数的原则和方法以及连续地面灌灌水技术的改进方案。模拟结果得到商丘田间试验的验证。

Simulation and Technique Parameters of Surge Flow Irrigation

According to the continuity equation, zero-inetia momentum equation and the con-cept of optimal irrigation, the zero-inetia models for surge irrigation are developed by themethod of Newton-Raphson and Preissman. The surface water flow in the field is simulated.The mechanisms of infiltration and advance are verified. The determining rule and programof the technique parameters are put forward, also the effect of the technique parameters onthe performance of irrigation. The improving method of the technique for the conventionalsurface irrigation is given. The simulation results are proved by field experiments.