A new approach for predicting surface heat flux from in-depth temperature measurements is experimentally verified herein. Specifically, this paper presents an experimental verification of the theory developed in the companion Part 1 work. In Part 1, a novel, physics-based calibration approach to the inverse heat conduction problem is mathematically developed, and a methodology for resolving surface heat flux is presented. It is significant to note that this new approach does not require knowledge of host material thermophysical properties, sensor depth, lead losses, or sensor characteristics. Regularization of the data is accomplished by way of a robust “future information parameter,” which is determined by examination of the residual. This paper presents an electrical heating experiment that validates the new inverse approach. A custom nichrome element heater is sandwiched between two identical bronze plates creating a symmetry condition. The setup is capable of surface heat fluxes near 12 W / cm 2 . Two test cases with different transient surface heat fluxes are presented, and highly favorable results are observed. The physics-based methodology of determining the optimum regularization parameter is also verified with experimental data.


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    Title :

    Surface Heat Flux Prediction Through Physics-Based Calibration, Part 2: Experimental Validation


    Contributors:

    Published in:

    Publication date :

    2013-01-24


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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    Elkins, B. / Keyhani, M. / Frankel, J. et al. | British Library Conference Proceedings | 2012


    Surface Heat Flux Prediction Through Physics-based Calibration: Part 1-Theory

    Frankel, J. / Keyhani, M. / Elkins, B. et al. | British Library Conference Proceedings | 2012


    Surface Heat Flux Prediction Through Physics-Based Calibration, Part 1: Theory

    Frankel, J. I. / Keyhani, M. / Elkins, B. E. | AIAA | 2013


    Surface heat flux prediction through physics-based calibration: part 1- theory

    Frankel, Jay / Keyhani, Majid / Elkins, Bryan | AIAA | 2012