One-dimensional numerical simulation at the laser irradiated point in selective laser thermoregulation system

A one-dimensional (1D) transient thermal simulation was developed for a laser-irradiated point in a selective laser thermoregulation (SLT) system aimed at rapidly heating high heat-resistant materials. The 1D model solves heat conduction with surface laser heating and accounts for convective and radiative losses. Simulation results show that the peak surface temperature under laser heating agrees closely with experiments, validating the model’s energy input and thermal properties. However, the 1D model fails to capture the rapid cooling observed experimentally, as it predicts a slower temperature drop after laser passage. This discrepancy is attributed to the model’s neglect of lateral heat conduction, which actually accelerates cooling. These findings underscore the robustness of our 1D thermal simulation model in predicting peak surface temperatures under various laser scan speeds. Despite the limitations in cooling rate predictions, the model provides valuable insights for the preliminary design and control of SLT systems. This work lays a solid foundation for developing more comprehensive 2D and 3D models, ultimately contributing to the precise thermal testing of high heat-resistant materials.