INTERNAL AND EXTERNAL VALIDATION OF A TWO-DIMENSIONAL FINITE ELEMENT CODE FOR RIVER FLOOD SIMULATIONS.
INTERNAL AND EXTERNAL VALIDATION OF A TWO-DIMENSIONAL FINITE ELEMENT CODE FOR RIVER FLOOD SIMULATIONS.
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河流洪水模拟二维有限元代码的内部和外部验证。
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
R. Sellin
中科院分区：
文献类型：
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作者：
P. Bates;M. Stewart;G. Siggers;C. Smith;J. Hervouet;R. Sellin
虽然初步的研究已经证明了应用二维有限元模型来达到规模河流洪水流量的可行性，这种代码的工程问题的进一步发展和实际使用受到了阻碍，缺乏可用的验证数据。本文试图解决这一问题的研究需要进行基准模型验证研究范围内的河段尺度，流态和洪水事件。具体而言，在英国的四个河段（Culm，Stour，塞文和黑水）和一个在美国（密苏里州）已建模使用TELEMAC二维有限元方案。这些模拟进行了比较的能力方面的模型，模拟洪水演算和水位过程线数据在点内部的建模域。这使得能够对模型能力进行更严格的评估，并更好地确定未来的研究需求。特别是这项研究已经确定了需要采用内部的模型计算域的数据，以实现强大的验证和需要现在进行比较的二维方案与替代洪水模拟工具。
While initial studies have demonstrated the feasibility of applying two-dimensional finite element models to reach scale river flood flows, the further development and practical use of such codes for engineering problems has been hampered by a lack of available validation data. This paper attempts to address this research need by conducting benchmark model validation studies over a range of reach scales, flow regimes and flood events. Specifically, four river reaches in the UK (the Culm, Stour, Severn and Blackwater) and one in the USA (the Missouri) have been modelled using the TELEMAC two-dimensional finite element scheme. These simulations have been compared in terms of the ability of the model to simulate both flood routing and stage hydrograph data at points internal to the modelled domain. This has enabled a more critical assessment of model capabilities to be obtained and has allowed the better definition of future research needs. In particular this study has identified the need to employ data internal to the model computational domain to achieve robust validation and the need to now undertake comparison of two-dimensional schemes with alternative flood simulation tools.