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Development of two-dimensional water quality management model using the reliability analysis method

机译：利用可靠性分析方法建立二维水质管理模型

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摘要

A two-dimensional water quality management model, the unsteady/uncertainty water quality model (UUWQM), is developed for three kinds of analysis: hydrodynamic and advection-diffusion analyses by using the Petrov-Galerkin finite element method, and a reliability analysis by using uncertainty techniques. This model is then applied to a 35 km reach of the Nakdong River in Korea. Two-dimensional hydrodynamic and deterministic water quality analyses were performed in this reach. The Monte Carlo simulation (MCS) method was used to decide and verify 14 key input parameters among 80 total input parameters. These key input parameters were incorporated to compute exceedance probabilities and frequency distributions using the mean first-order second-moment (MFOSM) and MCS methods at several locations along this reach of the Nakdong River. From the results of the probable risk for water quality standard, it shows that the outputs from the MFOSM method were similar to those from the MCS method. In practical usage, the MFOSM method is more attractive in terms of its computational simplicity and shorter execution time. Therefore, the UUWQM can be applied efficiently and accurately to estimate the water quality distribution and the risk assessment for the specified water quality in any river.
机译：开发了二维水质管理模型，即非定常/不确定水质模型（UUWQM），用于三种分析：使用Petrov-Galerkin有限元方法的流体动力分析和对流扩散分析，以及用于分析的可靠性不确定性技术。然后将此模型应用于韩国那洞河35公里的范围。在此范围内进行了二维水动力和确定性水质分析。蒙特卡罗模拟（MCS）方法用于确定和验证80个总输入参数中的14个关键输入参数。将这些关键输入参数合并在一起，以在那东河沿线的多个位置使用平均一阶第二阶矩（MFOSM）和MCS方法计算超出概率和频率分布。从水质标准可能的风险结果中可以看出，MFOSM方法的输出与MCS方法的输出相似。在实际使用中，MFOSM方法因其计算简单和执行时间短而更具吸引力。因此，UUWQM可以有效，准确地应用于任何河流的水质分布估算和特定水质风险评估。

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  • 来源
    《Journal of Hydroinformatics》 |2012年第2期|p.412-423|共12页
  • 作者

    Sang-Ho Kim; Kun-Yeun Han; Ji-Sung Kim; Joonwoo Noh;

  • 作者单位

    Department of Civil Engineering,Sangji university,Wonju, 83 Sangjidae-Gil Wonju 220-708,Korea;

    Department of Civil Engineering,Kyungpook National University,Daegu, 80 Daehak-Ro Daegu 702-701,Korea;

    River and Coastal Research Division,Korea Institute of Construction Technology, 1190Simindae-Ro Goyang 411-712,Korea;

    River Environment Team,K-water Research Institute,Daejeon, 462-1 Jeonmin-Dong Daejeon 305-730,Korea;

  • 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

    finite element; reliability analysis; uncertainty; water quality model;

    机译：有限元;可靠性分析;不确定;水质模型;

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