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首页> 外文期刊>Journal of Hydroinformatics >Formulation of a fast 2D urban pluvial flood model using a cellular automata approach
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Formulation of a fast 2D urban pluvial flood model using a cellular automata approach

机译：使用元胞自动机方法制定快速的2D城市雨洪模型

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摘要

With the increase in frequency and severity of flash flood events in major cities around the world, the infrastructure and people living in those urban areas are exposed continuously to high risk levels of pluvial flooding. The situation is likely to be exacerbated by the potential impact of future climate change. A fast flood model could be very useful for flood risk analysis. One-dimensional (1D) models provide limited information about the flow dynamics whereas two-dimensional (2D) models require substantial computational time and cost, a factor that limits their use. This paper presents an alternative approach using cellular automata (CA) for 2D modelling. The model uses regular grid cells as a discrete space for the CA setup and applies generic rules to local neighbourhood cells to simulate the spatio-temporal evolution of pluvial flooding. The proposed CA model is applied to a hypothetical terrain and a real urban area. The synchronous state updating rule and inherent nature of the proposed model contributes to a great reduction in computational time. The results are compared with a hydraulic model and good agreement is found between the two models.
机译：随着世界主要城市山洪暴发事件的频率和严重性增加，居住在这些城市地区的基础设施和人们不断遭受高水平的洪水泛滥。未来气候变化的潜在影响可能会加剧这种情况。快速洪水模型对于洪水风险分析可能非常有用。一维（1D）模型提供的流动动力学信息有限，而二维（2D）模型需要大量的计算时间和成本，这是限制其使用的一个因素。本文提出了一种使用元胞自动机（CA）进行二维建模的替代方法。该模型使用常规网格单元作为CA设置的离散空间，并将通用规则应用于本地邻域单元，以模拟河流洪水的时空演变。所提出的CA模型被应用于假设的地形和真实的市区。同步状态更新规则和所提出模型的固有性质有助于大大减少计算时间。将结果与液压模型进行比较，并且在两个模型之间找到了很好的一致性。

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  • 来源
    《Journal of Hydroinformatics》 |2013年第3期|676-686|共11页
  • 作者

    Bidur Ghimire; Albert S. Chen; Michele Guidolin; Edward C. Keedwell; Slobodan Djordjevic; Dragan A. Savic;

  • 作者单位

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

    Centre for Water Systems, College of Engineering Mathematics & Physical sciences, university of Exeter, Exeter, EX4 4QF, UK;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cellular automata; local rules; parallelization; pluvial flood inundation;

    机译：细胞自动机当地法规;并行化洪水泛滥;

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