Quantitative modeling of motion,tempersture gyratoons,and growth of inclusions in the weid pool

摘要

The velocity and temperature fields,the shape and size of the fusion zone,and the motion of the inclusions were calculated through the solution of the equations of conservation of mass,momentum and energy in three dimensions for various welding conditions.The loci and the temperature gyrations experienced by a barge number of inclusions were calculated numerically to seek a statistically meaningful residence time distribution of the inclusions and the number and intensities of the temperature cycles experienced by these particaes.Finally,both the growth and dissolution of the inclusions were considered to calculate their size distribution.