A nonlinear inverse problem in estimating the heat flux of the disc in a disc brake system

Yu Ching Yang, Wen Lih Chen

研究成果: Article同行評審

63 引文 斯高帕斯(Scopus)

摘要

In this study, an inverse algorithm based on the conjugate gradient method and the discrepancy principle is applied to estimate the unknown space- and time-dependent heat flux of the disc in a disc brake system from the knowledge of temperature measurements taken within the disc. In the direct problem, the specific heat and thermal conductivity are functions of temperature; hence this is a nonlinear inverse problem. The temperature data obtained from the direct problem are used to simulate the temperature measurements, and the effect of the errors in these measurements upon the precision of the estimated results is also considered. Results show that an excellent estimation on the space- and time-dependent heat flux can be obtained for the test cases considered in this study. The current methodology can be also applied to the prediction of heat flux in the pads, and then the heat partition coefficient between the disc and the pad in a brake system can be calculated.

原文English
頁(從 - 到)2439-2448
頁數10
期刊Applied Thermal Engineering
31
發行號14-15
DOIs
出版狀態Published - 2011 十月

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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