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引言现行使用的洪水演算模型的复杂程度可从简单的马斯京根模型变化到基于完全、一维、非恒定、自由表面水流方程的各种复杂的有限差分模型。有限差分模型通常需要沿河段的横断面和糙率资料。另外,在许多情况下,工程师们主要只涉及到少数断面的水位,而不涉及到大量内插断面的流量和水位。有一个精确的集总参数洪水演算模型具有重要意义,这就是 Haryami 的分析扩散模型,它是一个简单的同时又能求得一些所需位置水位的方法。然而
INTRODUCTION The sophistication of flood models currently in use varies from simple Muskingum models to complex finite-difference models based on complete, one-dimensional, unsteady, free surface flow equations. Finite difference models usually require cross-section and roughness data along the river. In addition, in many cases, engineers are mainly concerned with the water level at only a few sections without involving the flow and water level of a large number of interpolated sections. Having an accurate flood parameterization model for lumped parameters is of great importance. This is Haryami’s analytical diffusion model, which is a simple and easy way to find the water level at a desired location. however