Investigation of Flood Routing Using Variable Parameter Kinematic Wave Model (VPKWM) for Non-Prismatic Natural Channel in an Ungauged Basin

IF 1 Q4 ENGINEERING, CIVIL Journal of Applied Engineering Sciences Pub Date : 2020-11-11 DOI:10.2478/jaes-2020-0017
B. Bharali, U. Misra
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引用次数: 3

Abstract

Abstract This research concerns about the development and application of Variable Parameter Kinematic Wave Numerical model (VPKWM) based on 1-D Saint-Venant equation, to study the behaviour of the propagation of a flood wave in Non-prismatic natural waterways in an ungauged basin. The channel slope and wetted perimeter are considered as variable because of the irregularity of the boundary of the channel and the change in magnitude of discharge. The scarcity of reliable inflow data at upstream is a serious problem for the flood routing process in an ungauged basin. In this study the inflow hydrograph and lateral inflow hydrographs are obtained using SCS-CN method as rainfall runoff model. The performance of the model assessed considering four parameters such as root mean square error (RMSE), peak discharge, peak time and total volume. The results indicated that the VPKWM for non-prismatic channel provided reasonable output compared with the observed data.
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应用变参数运动波模型(VPKWM)研究非棱镜型天然河道的洪水演进
摘要基于一维Saint-Venant方程的变参数运动波数值模型(VPKWM)的开发与应用,研究了洪水波在未计量流域非棱镜形自然水道中的传播行为。由于河道边界的不规则性和流量的变化,河道坡度和湿润周长被认为是可变的。缺乏可靠的上游入流数据是一个严重的问题,在一个未测量流域的洪水调度过程。本文采用SCS-CN方法作为降雨径流模型,获得了入流线和侧向入流线。考虑了均方根误差(RMSE)、峰值流量、峰值时间和总量等四个参数对模型的性能进行了评估。结果表明,与实测数据相比,非棱柱形通道的VPKWM提供了合理的输出。
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来源期刊
自引率
9.10%
发文量
18
审稿时长
12 weeks
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