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Scaling of Effervescent Atomization and Industrial Two-Phase Flow.

机译：泡腾雾化和工业两相流的比例缩放。

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摘要

The objective of this thesis was to develop a novel understanding of the mechanics of two phase gas-liquid flows and sprays injected through industrial effervescent nozzles. This was done using detailed experimental investigations and scaling for two-phase flows and sprays. This study helps to quantify near-field liquid and gas phase statistics that are challenging and impossible to measure in the reactors due to inaccessibility restrictions. The development of nozzles is generally performed on air-water systems. My plan was to begin with the study of small-scale sprays (air and water) to compare to full scale industrial conditions at pilot operation (air-water) or at commercial operation (steam-bitumen), to determine size scaling relationships. The relationship between the lab scale air-water experiments and real industrial scale steam-bitumen has never been fully examined. Knowledge from this thesis will make the development of future nozzles with much less dependent on trial and error. This thesis was an attempt to establish fundamental scaling relationships for the prediction of two-phase spray behavior that can be applied directly to full scale industrial size nozzles that would be of very significant value to industries and to the scientific community in general. Understanding the performance of two phase nozzles through established scaling laws will aid in optimizing the two phase nozzle flow conditions and will serve as a major tool in nozzle design and development for future generation nozzles for many industrial applications.
机译：本文的目的是对通过工业泡腾喷嘴喷射的两相气液流和喷雾的力学原理有一个新的认识。这是通过详细的实验研究以及两相流和喷雾的结垢完成的。这项研究有助于量化近场液相和气相统计数据，这些数据由于难以接近而受到挑战，无法在反应堆中进行测量。喷嘴的开发通常在空气-水系统上进行。我的计划是从研究小型喷雾剂（空气和水）开始，以便与试验操作（空气-水）或商业操作（蒸汽-沥青）的全尺寸工业条件进行比较，以确定尺寸比例关系。实验室规模的空气水实验与实际工业规模的蒸汽沥青之间的关系从未得到充分检验。从本论文中获得的知识将使未来喷嘴的开发不再需要反复试验。本文试图建立基本的比例关系来预测两相喷雾行为，该关系可直接应用于工业规模的全尺寸喷嘴，这对工业和整个科学界都将具有非常重要的价值。通过已建立的比例定律了解两相喷嘴的性能将有助于优化两相喷嘴的流量条件，并将成为许多工业应用中下一代喷嘴的喷嘴设计和开发的主要工具。

著录项

  • 作者

    Rahman, Mohammad Azizur.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 252 p.
  • 总页数 252
  • 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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