An Implicit Finite-Difference model for Thermal Processes Simulation and Surveys
G. Ghodsi, D. Gavrilov, E. Maeva, R.Gr. Maev · Proceedings of the 2010 International Conference on Quantitative InfraRed Thermography · 2010
A finite-difference model based on the implicit approach for simulations of basic thermographic experiments is discussed.A specific sparse-matrices format was successfully utilized in order to accelerate the solution of a large system of equations while simulating each time step, as well as reducing the computer memory consumption.By using the approach discussed, the authors demonstrate the applicability of the model for simulation of the Parker method for thermal diffusivity measurement in a 1D Cartesian, 2D Cartesian and cylindrical coordinate system.The model has demonstrated a good agreement with experiments conducted on samples of metals, epoxy and plastics.