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首页> 外文期刊>Heat Transfer Engineering >Effect of Initial Temperature of a Cylindrical Steel Block on Heat Transfer Characteristics of Staggered Array Jets During Water Jet Quenching
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Effect of Initial Temperature of a Cylindrical Steel Block on Heat Transfer Characteristics of Staggered Array Jets During Water Jet Quenching

机译：圆柱钢块初始温度对水射流淬火交错阵列射流传热特性的影响

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摘要

The effects of initial temperature of a cylindrical stainless steel block on heat transfer characteristics are investigated for a staggered-array circular jet during water jet quenching. The initial temperature of a block is set to change from 500℃ to 1,000℃ by an induction heating method. Transient temperature measurements are made at discrete locations near the surface along radial direction. The surface temperature and heat flux distributions can be numerically estimated by solving a two-dimensional axisymmetric inverse heat conduction problem. The heat transfer characteristics of staggered-array jets in the impingement jet zone are compared with those in the wall jet flow zone. The effect of initial temperature of the test block in the nucleate boiling regime is also examined to solve the difficulties in most water jet quenching of hot steel. The area-averaged heat flux curves are used to evaluate representative cooling performance of staggered-array jets. The maximum area-averaged heat flux linearly increases as the initial temperature of the test block increases. Regardless of initial temperature of the test block, the nucleate boiling regimes are remarkably similar to each other. The area-averaged heat flux is also provided for fully developed nucleate boiling.
机译：对于水射流淬火过程中的交错阵列圆形射流，研究了圆柱形不锈钢块的初始温度对传热特性的影响。通过感应加热方法将块的初始温度设置为从500℃到1,000℃。沿径向在表面附近的离散位置进行瞬态温度测量。表面温度和热通量分布可以通过求解二维轴对称逆热传导问题来数值估算。比较了冲击射流区中交错阵列射流的传热特性和壁射流区中的传热特性。还测试了试块初始温度在成核沸腾状态中的影响，以解决大多数热钢水射流淬火中的困难。面积平均热通量曲线用于评估交错阵列射流的代表性冷却性能。最大面积平均热通量随试块初始温度的升高而线性增加。无论试块的初始温度如何，成核沸腾方式都彼此非常相似。还提供了面积平均的热通量，以充分发展成核沸腾。

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  • 来源
    《Heat Transfer Engineering》 |2015年第11期|1037-1045|共9页
  • 作者

    TAEHOON KIM; DONG-WOOK OH; KYU HYUNG DO; JANG MIN PARK; JUNGHO LEE;

  • 作者单位

    Korea Institute of Machinery and Materials, Daejeon, Korea;

    Department of Mechanical Engineering, Chosun University, Gwangju, Korea;

    Korea Institute of Machinery and Materials, Daejeon, Korea;

    School of Mechanical Engineering, Yeungnam University, Gyeongbuk, Korea;

    Korea Institute of Machinery and Materials, 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon, 305-343, Korea;

  • 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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