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Estimation of Internal Heat Generation in a Fin Involving All Modes of Heat Transfer Using Golden Section Search Method

机译:使用黄金分割搜索法估算涉及所有传热模式的鳍片中的内部热量

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摘要

The present work deals with the application of the golden section search method (GSSM) for predicting the internal rate of heat generation to reconstruct a given temperature distribution within a rectangular fin involving all modes of heat transfer. The thermal conductivity has been assumed to be temperature-dependent. The forward problem is numerically solved using an implicit fourth-order Runge-Kutta method, whereas, an inverse problem has been solved using GSSM. In conjunction with GSSM, for the inverse analysis, the effect of inverse crime has been addressed using a different solver operating on fifth-order accurate Runge-Kutta method than that used for synthesizing the input data. A case study of Hastelloy generally used in gas turbine applications is also presented and the effect of measurement error in the temperature distribution has been reported. For pure temperature data, an exact estimation of the internal heat generation rate is done, whereas, even with noisy data, a satisfactory estimation of the heat generation rate is also achieved which is verified from the reconstructed temperature distributions.
机译:本工作涉及黄金分割搜索方法(GSSM)的应用,该方法用于预测内部热量的产生,从而在涉及所有传热模式的矩形散热片内重建给定的温度分布。假定导热率与温度有关。使用隐式四阶Runge-Kutta方法可以数值求解正向问题,而使用GSSM可以解决反问题。与GSSM结合使用,对于逆分析,已经使用与用于合成输入数据的方法不同的对五阶精确Runge-Kutta方法进行操作的求解器来解决了逆犯罪的影响。还介绍了通常用于燃气轮机应用中的哈氏合金的案例研究,并已报告了测量误差对温度分布的影响。对于纯温度数据,可以对内部发热量进行精确估算,而即使有嘈杂的数据,也可以实现令人满意的发热量估算,这可以从重建的温度分布中得到验证。

著录项

  • 来源
    《Heat Transfer Engineering》 |2018年第4期|58-71|共14页
  • 作者

    Ranjan Das; Balaram Kundu;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology Ropar, Punjab, India;

    Department of Mechanical Engineering, Jadavpur University, Kolkata, West Bengal, India;

  • 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
  • 中图分类
  • 关键词

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