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The Use of Inverse Heat Conduction Models for Estimation of Transient Surface Heat Flux in Electroslag Remelting.

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Title: The Use of Inverse Heat Conduction Models for Estimation of Transient Surface Heat Flux in Electroslag Remelting.
Authors: Plotkowski, Alex1 aplotkow@purdue.edu, Krane, Matthew John M.1 krane@purdue.edu
Source: Journal of Heat Transfer. Mar2015, Vol. 137 Issue 3, p1-9. 9p.
Subjects: Heat flux measurement, Heat conduction, Electroslag process, Real-time control, Transient analysis, Model validation, Mathematical models
Abstract: Three inverse heat conduction models were evaluated for their ability to predict the transient heat flux at the interior surface of the copper mold in the electroslag remelting (ESR) process for use in validating numerical ESR simulations and real-time control systems. The models were evaluated numerically using a simple one-dimensional (ID) test case and a 2D pseudo-ESR test case as a function of the thermocouple locations and sample frequency. The sensitivity of the models to measurement errors was then tested by applying random error to the numerically calculated temperature fields prior to the application of the inverse models. This error caused large fluctuations in the results of the inverse models, but these could be mitigated by implementing a simple Savitzky- Golay filter for data smoothing. Finally, the three inverse methods were applied to a fully transient ESR simulation to demonstrate their applicability to the industrial process. Based on these results, the authors recommend that the 2D control volume method described here be applied to industrial ESR trials. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: The Use of Inverse Heat Conduction Models for Estimation of Transient Surface Heat Flux in Electroslag Remelting.
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  Data: <searchLink fieldCode="AR" term="%22Plotkowski%2C+Alex%22">Plotkowski, Alex</searchLink><relatesTo>1</relatesTo><i> aplotkow@purdue.edu</i><br /><searchLink fieldCode="AR" term="%22Krane%2C+Matthew+John+M%2E%22">Krane, Matthew John M.</searchLink><relatesTo>1</relatesTo><i> krane@purdue.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Heat+Transfer%22">Journal of Heat Transfer</searchLink>. Mar2015, Vol. 137 Issue 3, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Heat+flux+measurement%22">Heat flux measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+conduction%22">Heat conduction</searchLink><br /><searchLink fieldCode="DE" term="%22Electroslag+process%22">Electroslag process</searchLink><br /><searchLink fieldCode="DE" term="%22Real-time+control%22">Real-time control</searchLink><br /><searchLink fieldCode="DE" term="%22Transient+analysis%22">Transient analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Model+validation%22">Model validation</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Three inverse heat conduction models were evaluated for their ability to predict the transient heat flux at the interior surface of the copper mold in the electroslag remelting (ESR) process for use in validating numerical ESR simulations and real-time control systems. The models were evaluated numerically using a simple one-dimensional (ID) test case and a 2D pseudo-ESR test case as a function of the thermocouple locations and sample frequency. The sensitivity of the models to measurement errors was then tested by applying random error to the numerically calculated temperature fields prior to the application of the inverse models. This error caused large fluctuations in the results of the inverse models, but these could be mitigated by implementing a simple Savitzky- Golay filter for data smoothing. Finally, the three inverse methods were applied to a fully transient ESR simulation to demonstrate their applicability to the industrial process. Based on these results, the authors recommend that the 2D control volume method described here be applied to industrial ESR trials. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Heat Transfer is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1115/1.4029038
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 1
    Subjects:
      – SubjectFull: Heat flux measurement
        Type: general
      – SubjectFull: Heat conduction
        Type: general
      – SubjectFull: Electroslag process
        Type: general
      – SubjectFull: Real-time control
        Type: general
      – SubjectFull: Transient analysis
        Type: general
      – SubjectFull: Model validation
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      – SubjectFull: Mathematical models
        Type: general
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      – TitleFull: The Use of Inverse Heat Conduction Models for Estimation of Transient Surface Heat Flux in Electroslag Remelting.
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            NameFull: Plotkowski, Alex
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            NameFull: Krane, Matthew John M.
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              Text: Mar2015
              Type: published
              Y: 2015
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              Value: 137
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