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首页> 外文期刊>Heat Transfer Engineering >Experimental Investigation and Uncertainty Analysis on Combined Heat Losses Characteristics of a Cylindrical Cavity with Only Bottom Wall Heated at Constant Heat Flux
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Experimental Investigation and Uncertainty Analysis on Combined Heat Losses Characteristics of a Cylindrical Cavity with Only Bottom Wall Heated at Constant Heat Flux

机译：恒定热通量下底壁圆柱腔复合热损失特性的实验研究与不确定性分析

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摘要

An experiment was performed to explore the effects of inclination, aperture ratio, and heat flux on heat losses of a fully or partially open cylindrical cavity, where only the bottom wall (opposite to the aperture) was heated at constant heat flux. Temperature distributions on cavity bottom and side walls are presented. The empirical correlations of free convection and radiation heat losses in terms of Nusselt number are proposed. The credibility of the experiments was checked by detailed uncertainty analysis. It confirmed that the present experimental results are credible and can be used to validate the relevant numerical codes. In addition, the cavity inclination, aperture ratio, and heat flux significantly affect the combined heat losses characteristics, and the influence of these factors, which is intercoupled to some extent, should be considered at the same time.
机译：进行了一项实验，以探索倾角，孔径比和热通量对完全或部分打开的圆柱腔的热损失的影响，在该腔中，只有底壁（与孔径相对）被以恒定的热通量加热。给出了空腔底部和侧壁上的温度分布。提出了自由对流和辐射热损失的努塞尔数经验关系。通过详细的不确定性分析检查了实验的可信度。它证实了目前的实验结果是可信的，并可用于验证相关的数字代码。此外，腔体的倾斜度，孔径比和热通量会显着影响组合的热损失特性，因此应同时考虑这些因素的影响，这些因素在某种程度上是相互耦合的。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|539-552|共14页
  • 作者

    SHUANG-YING WU; ZU-GUO SHEN; LAN XIAO;

  • 作者单位

    Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China,College of Power Engineering, Chongqing University, Chongqing 400044, China;

    Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China,College of Power Engineering, Chongqing University, Chongqing, China;

    Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, China,College of Power Engineering, Chongqing University, Chongqing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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