TY - EJOU
AU - Mariani, V.C.
AU - Neckel, V. J.
AU - Coelho, L. S.
TI - Evolutionary Algorithms Applied to Estimation of Thermal Property by Inverse Problem
T2 - Computer Modeling in Engineering \& Sciences
PY - 2010
VL - 68
IS - 2
SN - 1526-1506
AB - In this study an inverse heat conduction problem using two optimization methods to estimate apparent thermal diffusivity at different drying temperatures is solved. Temperature and moisture versus time were obtained numerically using heat and mass transfer equations with drying temperatures in the range between 20°C to 70°C. The solution of the partial differential equation is made with a finite difference method coupled to optimization techniques of Differential Evolution (DE) and Particle Swarm Optimization (PSO) used in inverse problem. Statistical analysis shows no significant differences between reported and estimated curves, and no remarkable differences between results obtained using DE and PSO in 30 runs. The convective and evaporative effects and shrinkage assumptions in the model provides greater reliability on the calculated thermal diffusivity.
KW - Inverse problem
KW - Thermal diffusivity
KW - Optimization
KW - Differential evolution
KW - Particle swarm optimization
KW - Finite difference method
DO - 10.3970/cmes.2010.068.167