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首页> 外文会议>International Conference on Water and Environment(WE-2003); 20031215-18; Bhopal(IN) >Overland Flow Routing Through Time-Area Segments In Small Catchments
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Overland Flow Routing Through Time-Area Segments In Small Catchments

机译：小流域中穿越时区的陆上径流路由

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摘要

Routing of the overland flow depends on the physiography, soil, vegetation and the rainfall characteristics. Physiography forms the main basis for discretizing the catchment which is well accounted by time-area diagram of the catchment. Based on physiography, the catchment was discretized into time-area segments and the numerical solution of the governing equations of overland flow were taken up along such a spatial grid formed by time-area segments. The governing equations were solved along the above non-uniform spatial grids where kinematic wave parameter was allowed to vary from one time-area segment to another in the catchment geometry. The model based on this scheme was developed and applied to eight catchments from different climatic zones. The Nash-Sutcliffe efficiency was obtained more than 70 per cent representing better method of discretization of the catchment and giving a more realistic prediction of overland flow.
机译：陆上径流的路线取决于地貌，土壤，植被和降雨特征。生理学是流域离散化的主要基础，流域的时域图很好地说明了这一点。基于生理学，将流域离散为多个时区片段，并沿着由时区片段形成的这种空间网格，对陆流控制方程进行数值求解。沿上述非均匀空间网格求解控制方程，在该网格中，运动波参数在集水区几何结构中从一个时区段变化到另一个时区段。开发了基于该方案的模型，并将其应用于来自不同气候带的八个流域。 Nash-Sutcliffe效率达到了70％以上，这代表了将流域离散化的更好方法，并提供了更现实的陆路流量预测。

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