Estimation of Local Heat Transfer Coefficient in Impingement Jet by Solving Inverse Heat Conduction Problem with Mollified Temperature Data

Document Type : Article

Authors

1 Center of Excellence in Design and Optimization of Energy Systems ,School of Mechanical ‎Engineering College of Engineering, University of Tehran, Tehran, Iran‎

2 Department of Mechanical Engineering, Shoushtar branch, Islamic azad university, ‎Shoushtar,Iran‎

Abstract

The aim of this paper is to determinate the local convective heat transfer coefficient slot jet impingement by using Inverse Heat Conduction Methods. Sequential specification function method and conjugate gradient method are used to solve the Inverse Heat Conduction Problem (IHCP) and estimate the space-variable convective heat transfer coefficient. This paper proposes a procedure to smooth the temperature data by Mollification method prior to utilizing the inverse method. The measured transient temperature data may be obtained from locations inside the body or on its inactive boundaries. The uncertainties in the estimated in heat transfer coefficient are calculated using Bias and Variance errors. The obtained results show that Mollifying measured data causes an increase in the accuracy and the stability of the estimation.

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Scientia Iranica
Volume 21, Issue 6 - Serial Number 6
Transactions on Mechanical Engineering (B)
December 2014
Pages 1870-1879

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History

  • Receive Date: 21 July 2012
  • Revise Date: 08 March 2014
  • Accept Date: 08 April 2014

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