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A modified space marching method using future temperature measurements for transient nonlinear inverse heat conduction problem

机译：一种使用未来温度测量的改进的空间行进方法，用于求解瞬态非线性逆导热问题

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摘要

A new modified space marching method is presented for solving transient nonlinear inverse heat conduction problems. The new method combines the merits of space marching and function specification methods. Future temperature measurements are used in a least square manner to stabilize the calculation results. The transient surface temperature and heat flux can be accurately recovered by the method without employing iteration procedure or data smoothing technique. Three types of heat flux profiles were used to evaluate the proposed inversion method and a comparison to the classical space marching method was drawn to demonstrate the advantage of the present method. A numerical experiment is performed to investigate the influence of parameters in the method as well as to illustrate the selection of optimal parameters. The present method calculates surface temperature and heat flux values in a sequential manner therefore is suitable for on-line estimation application.
机译：提出了一种新的改进的空间行进方法，用于求解瞬态非线性逆导热问题。新方法结合了空间行进和功能指定方法的优点。未来的温度测量将以最小二乘法使用，以稳定计算结果。通过该方法可以准确地恢复瞬态表面温度和热通量，而无需采用迭代程序或数据平滑技术。使用三种类型的热通量曲线来评估所提出的反演方法，并与经典空间行进方法进行比较，以证明本方法的优势。进行了数值实验，以研究该方法中参数的影响以及说明最佳参数的选择。本方法以顺序方式计算表面温度和热通量值，因此适用于在线估计应用。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2017年第3期|1157-1163|共7页
  • 作者

    Ran Li Zhongwei Huang; Gensheng Li; Xiaoguang Wu; Pengsen Yan;

  • 作者单位

    State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China;

    State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China;

    State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR China;

    State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, PR 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

    Space marching; Least square; Nonlinear; Inverse heat conduction problem;

    机译：太空行军;最小二乘法;非线性反导热问题;

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