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Particle Contributions to Kinematic Friction in Slurry Pipeline Flow.

机译:泥浆管道流动中运动摩擦的颗粒贡献。

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摘要

In this research, two areas important to the analysis and prediction of slurry friction losses during pipeline flow were studied. A correlation was developed to predict the particle friction factor, f s, for prediction of the kinematic friction loss component of slurry friction losses. Methods for determining the maximum particle concentration, C∞ were studied and compared.;Slurries of four particle types: aluminum oxide, petroleum coke, angular sand, and silica flour in water were tested in a 75 mm diameter pipeline loop at different concentrations. These particles were chosen in order to study the effects of particle density and particle size on the kinematic friction loss component of slurry friction losses.;Experiments where pressure loss was measured as a function of velocity were conducted and the data collected were used, along with data previously collected by researchers at the SRC Pipe Flow Technology Centre, to create a new fs correlation. The correlation is logarithmic and covers a wider range of dimensionless particle diameters (d+) than previous correlations.;Four methods were studied for determining C∞: pipeline loop tests, concentric cylinder viscometer tests, settled bed tests, and a semi-empirical correlation. It is recommended that the pipeline method be used to get very accurate predictions of C∞. If pipeline tests cannot be conducted, the settled bed tests and the Hoffmann- Finkers correlation had the least error. The viscometer method is not recommended due to its inability to accurately predict C∞ for particles other than angular sand.;Future work should be performed to expand the new fs correlation for complex slurries containing particles with broad or multimodal size distributions and slurries containing particles with different densities.
机译:在这项研究中,研究了对分析和预测管道流动过程中泥浆摩擦损失非常重要的两个方面。建立了相关性以预测颗粒摩擦因子f s,以预测浆液摩擦损失的运动学摩擦损失分量。研究并比较了确定最大颗粒浓度C∞的方法。在直径为75 mm的管道回路中,在不同浓度下测试了氧化铝,石油焦,角砂和硅粉这四种颗粒类型的浆液。选择这些颗粒是为了研究颗粒密度和粒径对浆液摩擦损失的运动摩擦损失分量的影响。进行了测量压力损失与速度的函数的实验,并使用了收集的数据,以及先前由SRC管道流动技术中心的研究人员收集的数据,以创建新的fs相关性。相关性是对数的,并且比以前的相关性涵盖了更宽的无量纲粒径(d +)范围。研究了确定C∞的四种方法:管道回路测试,同心圆筒粘度计测试,沉降床测试和半经验相关性。建议使用流水线方法获得非常准确的C∞预测。如果无法进行管道测试,则沉降床测试和霍夫曼-芬克斯相关系数的误差最小。不建议使用粘度计方法,因为它无法准确预测除角砂以外的其他颗粒的C∞.;对于包含宽或多峰尺寸分布的颗粒的复杂浆液和具有角分布的颗粒的浆液,应开展进一步的工作以扩展新的fs相关性不同的密度。

著录项

  • 作者

    Gillies, Daniel Peter.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Chemical.
  • 学位 M.Sc.
  • 年度 2013
  • 页码 94 p.
  • 总页数 94
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

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