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首页> 外文期刊>Journal of enhanced heat transfer >COMPARISON ON ENHANCED PHASE CHANGE HEAT TRANSFER OF LOW MELTING POINT METAL MELTING USING DIFFERENT HEATING METHODS
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COMPARISON ON ENHANCED PHASE CHANGE HEAT TRANSFER OF LOW MELTING POINT METAL MELTING USING DIFFERENT HEATING METHODS

机译：不同加热方式低熔点金属熔体强化相变传热的比较

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摘要

The metal melting performances with different heating methods comprising external surface heating (ESH), internal surface heating (ISH) and uniform heat generation (UHG) are compared via theoretical analysis and numerical investigation. The comparison was conducted in a cylinder enclosure with gallium as the phase change material, and based on the same metal volume and heat power. Firstly, three metal melting models were established to predict the melting behavior; the temperature distribution equation was theoretically derived, which shows satisfactory agreement with the simulation results. A series of numerical investigations were performed and evaluated from the perspective of temperature distribution, velocity distribution, melting time and phase front evolution. Results show that compared to the ESH and ISH, UHG has the lowest operation temperature. UHG is strongly recommended if there is no electric insulation requirement. In addition, the corresponding dimensionless correlations are also obtained. The three melting models are comprehensively analyzed and recommended for different engineering fields. This study provides an insight into the metal melting performance comparisons of ESH, ISH, and UHG, which has a guiding significance to achieve fast metal melting in practical liquid metal thermal management systems.
机译：通过理论分析和数值研究，比较了不同加热方式的金属熔化性能，包括外表面加热（ESH），内表面加热（ISH）和均匀发热（UHG）。比较是在具有镓作为相变材料并基于相同金属体积和热功率的圆柱外壳中进行的。首先，建立了三种金属熔化模型来预测熔化行为。从理论上推导了温度分布方程，与仿真结果吻合良好。从温度分布，速度分布，熔化时间和相前演化的角度进行了一系列数值研究和评估。结果表明，与ESH和ISH相比，UHG的运行温度最低。如果没有电气绝缘要求，强烈建议使用UHG。另外，还获得了相应的无量纲相关性。对这三种熔化模型进行了综合分析，并推荐用于不同的工程领域。这项研究提供了对ESH，ISH和UHG的金属熔化性能比较的深入了解，这对于在实际的液态金属热管理系统中实现快速金属熔化具有指导意义。

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  • 来源
    《Journal of enhanced heat transfer》 |2019年第2期|179-194|共16页
  • 作者

    Zhang Xu-Dong; Gao Jian-Ye; Zhang Peng-Ju; Liu Jing;

  • 作者单位

    Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryobiomed Engn, Beijing 100190, Peoples R China|Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Sch Future Technol, Beijing 100039, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryobiomed Engn, Beijing 100190, Peoples R China|Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryobiomed Engn, Beijing 100190, Peoples R China|Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryobiomed Engn, Beijing 100190, Peoples R China|Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Sch Future Technol, Beijing 100039, Peoples R China|Tsinghua Univ, Sch Med, Dept Biomed Engn, Beijing 100084, Peoples R China;

  • 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

    metal melting; liquid metal; heat generation; melting performance; dimensionless correlation;

    机译：金属熔化液态金属发热熔化性能无量纲相关;

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