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Transient behavior of fluid flow and heat transfer with phase change in vertical porous channels

机译:垂直多孔通道中流体流动和传热的瞬态行为及相变

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摘要

The transient behavior of flow boiling in vertical porous channels is numerically studied in this paper. The velocity and temperature fields under different parameters for both aiding and opposing flows are investigated. Distinctly different flow and heat transfer features are observed in the comparison of aiding and opposing flows. An analysis of liquid saturation along the heated wall indicates that the minimum liquid saturation for aiding flow is located at the tail of the heated section, whereas for opposing flow, it is within the heated section and shifts upstream with the increase of Rayleigh number and decrease of Pec-let number.
机译:数值研究了垂直多孔通道内流动沸腾的瞬态行为。研究了辅助和反向流动下不同参数下的速度和温度场。在比较辅助流动和相反流动时,观察到截然不同的流动和传热特征。对沿加热壁的液体饱和度的分析表明,用于辅助流动的最小液体饱和度位于加热部分的尾部,而对于反向流动,最小液体饱和度在加热部分内,并且随着瑞利数的增加和减少而向上游移动。 Pec-let号码。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第24期|p.5209-5222|共14页
  • 作者单位

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore;

    rnSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore;

    rnSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore;

    Mechanical Engineering Department, The Petroleum Institute, Abu Dhabi, United Arab Emirates;

  • 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

    transient; two-phase mixture model; vertical porous channel; aiding and opposing flows;

    机译:短暂的;两相混合模型垂直多孔通道协助和反对潮流;

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