Hybrid Optimization Approach for Determination of Thermal Boundary Conditions

Abstract

The estimation of thermal boundary conditions occurring during heat treat-ment processes is an essential requirement for characterization of heat trans-fer phenomena. In this work, the performance of five optimization tech-niques is studied. These models are the Conjugate Gradient Method, the Le-venberg-Marquardt Method, the Simplex method, the NSGA II algorithm and a hybrid approach based on the NSGA II and Levenberg-Marquardt Method sequence. The models are used to estimate the heat transfer coefficient in 2D axis symmetrical case during transient heat transfer. The performance of the optimization methods is demonstrated using numerical experiments.