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The Research on the Deposition Regularity of Suspended Particles in Storm Sewer

机译：雨水管道中悬浮颗粒沉积规律的研究

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摘要

The deposition process of suspended particles in storm sewer has been simulated to explore the depositional regularity of storm sewer under different conditions of pipelines and suspended particles. The maximum deposition position, maximum deposition rate, and average deposition velocity of suspended particles have been calculated according to the mathematical models. The results show that the different conditions have a great influence on the deposition process in the pipeline. The higher concentration, the larger fullness and particle size or the smaller flow velocity and pipe slope, the more serious the deposition in the front section of the pipeline. The mathematical models show that the five factors have different effects on the maximum deposition position, maximum deposition rate, and average deposition velocity in the pipeline. When the concentration, particle size, and fullness increase, the maximum deposition position of suspended particles is removed forward. When the concentration and flow velocity increases, the maximum deposition rate tends to decrease, while it rises with the increase of particle size. In the case of high concentration or large particle size, the average deposition velocity of the suspended particles is larger, and it rises first and then decreases when flow velocity increases. Under the test conditions, when the flow velocity is in the range of 0.3-0.35 m/s, the average deposition velocity reaches the maximum.
机译：通过模拟雨水管道中悬浮颗粒的沉积过程，探讨了在不同管道和悬浮颗粒条件下雨水管道的沉积规律。根据数学模型计算出悬浮颗粒的最大沉积位置，最大沉积速率和平均沉积速度。结果表明，不同的条件对管道中的沉积过程有很大的影响。浓度越高，丰满度和粒径越大，流速和管道斜率越小，管道前部的沉积越严重。数学模型表明，这五个因素对管道中的最大沉积位置，最大沉积速率和平均沉积速度有不同的影响。当浓度，粒度和丰满度增加时，悬浮颗粒的最大沉积位置会向前移除。当浓度和流速增加时，最大沉积速率趋于降低，而随着颗粒尺寸的增加而增加。在高浓度或大粒径的情况下，悬浮颗粒的平均沉积速度较大，并且当流速增加时，其先升高然后降低。在测试条件下，当流速在0.3-0.35 m / s的范围内时，平均沉积速度达到最大值。

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  • 来源
    《Water, Air, and Soil Pollution》 |2018年第3期|66.1-66.10|共10页
  • 作者

    Liu Cuiyun; Tan Shuai; Zhang Xiaohua; Yu Jinpeng; Xu Yanhua; Xu Yonghai;

  • 作者单位

    Nanjing Tech Univ, Coll Urban Construct, Nanjing 211800, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Coll Urban Construct, Nanjing 211800, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Coll Urban Construct, Nanjing 211800, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Coll Urban Construct, Nanjing 211800, Jiangsu, Peoples R China;

    Nanjing Tech Univ, Jiangsu Key Lab Ind Water Conservat & Emiss Reduc, Nanjing 211800, Jiangsu, Peoples R China;

    Jiangsu Hanjian Grp, Yangzhou 225127, Jiangsu, Peoples R China;

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

    Stormsewer; Suspended particles; Deposition position; Deposition rate; Deposition velocity;

    机译：雨水管道;悬浮颗粒;沉积位置;沉积速率;沉积速度;

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