An inverse problem to estimate simultaneously six internal heat fluxes for a square combustion chamber

作者：Huang Cheng Hung^*; Lee Chien Tsuen

来源：International Journal of Thermal Sciences, 2015, 88: 59-76.

DOI：10.1016/j.ijthermalsci.2014.08.021

• Square combustion chamber
• Internal heat fluxes estimation
• Three-dimensional inverse problem
• Conjugate gradient method

An Inverse Heat Conduction Problem (IHCP) is examined in this study by an Iterative Regularization Method (IRM), and commercial software CFD-ACE+ to estimate simultaneously six unknown internal surface heat fluxes of a square internal combustion chamber with irregular external fins based on simulated external temperature measurements by thermal cameras. The inverse problem will be justified based on the numerical experiments where six different surface heat flux distributions will be determined. Results show that the inverse solutions can always be obtained accurately with simulated exact temperature measurements, since the maximum relative error for the estimated heat fluxes is less than 3.3%. Also, it is concluded that reliable internal surface heat fluxes of the square chamber can still be obtained in the present study even when large measurement errors are included.

• 出版日期2015-2