Numerical simulation of thermal effect on metal irradiated by high-power laser beam in different airflow

This paper studied the model about heat release from the oxidation when the high-energy laser irradiated the iron plate, and a numerical simulation code was developed by using the finite-element method. The temporal and spatial distributions of temperature in the iron plate were simulated under the conditions of airflow, nitrogen flow, or no flow. The quantity of heat in the course of oxidation was analyzed. Numerical results indicated that the difference of temperature rising was very small under the conditions of nitrogen flow and no flow, and the quantity of heat release in oxidation was approximately 35% of the total energy deposited in the iron plate for the air flow condition. The numerical results agreed well with the experimental results reported in the open literature.