In this study, the effect of infiltration on overland flow is explored by incorporating infiltration into the flood routing equations. Particularly, different types of infiltration methods, i.e. the Horton Method, the Integrated Horton Method and the Infiltration Index Method are integrated into the kinematic wave equation. Infiltration capacity curve and infiltration rate are calculated along with the hydrographs. Moreover, the same parameters are determined by incorporating the Integrated Horton method into different forms of Saint-Venant Equations to evaluate the effect of different routing methods on overland flow hydrograph. MacCormack explicit finite difference scheme is employed in solving the coupled infiltration-overland flow differential equations. For each wave routing method, hydrographs of overland flow with infiltration and with no infiltration are compared and discussed under constant and variable rainfall intensities and for different soil types. Results show that infiltration methods affect the overland flow hydrographs significantly.

在这项研究中，通过将入渗纳入洪水路由方程中，探索了入渗对陆上径流的影响。特别地，将不同类型的渗透方法，即霍顿方法，霍顿综合方法和渗透指数方法整合到运动波动方程中。渗透能力曲线和渗透率随水文图一起计算。此外，通过将集成霍顿方法合并到不同形式的Saint-Venant方程中来确定相同的参数，以评估不同路由方法对陆上流量水文图的影响。MacCormack显式有限差分方案用于求解渗流-陆流耦合微分方程。对于每种波路由方法，在降雨强度不变和变化以及不同土壤类型的情况下，对有渗入和无渗入的陆上径流水位图进行了比较和讨论。结果表明，入渗方法对陆上水文图有显着影响。