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Dispersed bubble and particulate flows in liquid continuous media.

机译:分散的气泡和微粒在液体连续介质中流动。

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摘要

Oil sand hydrotransport is used to transport and condition oil sand ore. These mixtures contain sand, clays, bitumen, water and air. This study looks at a method to measure air bubble size distributions in an opaque medium and presents a semi-empirical single fluid Eulerian model for turbulent slurry (solid-liquid) flows.;The model uses a new quantity, turbulent slurry viscosity, to predict frictional pressure drops and concentration profiles for slurries of fine particles (< 250mum) at flow velocities greater than the deposition velocity. Model predictions were in satisfactory agreement with results obtained from the literature.;A piston sampler was used to grab a small sample from pipeline. Bubbles contained in the sample are released into a water-filled tube so that bubble images can be captured. Results showed that the piston sampler did not provide an accurate measurement of the in situ bubble size distribution.
机译:油砂水运用于运输和调节油砂矿石。这些混合物包含沙子,粘土,沥青,水和空气。这项研究着眼于一种测量不透明介质中气泡尺寸分布的方法,并提出了一种用于湍流浆液(固液)流动的半经验单流体欧拉模型;该模型使用了一个新的量-湍流浆液粘度来预测流速大于沉积速度的细小颗粒(<250mum)浆料的摩擦压降和浓度曲线。模型预测与从文献中获得的结果令人满意。活塞采样器用于从管道中获取少量样品。样品中包含的气泡被释放到充满水的管中,从而可以捕获气泡图像。结果表明,活塞采样器无法提供对原位气泡尺寸分布的准确测量。

著录项

  • 作者

    Kumar, Divya.;

  • 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 2006
  • 页码 74 p.
  • 总页数 74
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

  • 入库时间 2022-08-17 11:40:08

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