64
2 Model of Quasi-Steady Weld Pool Dynamics and Numerical Simulation
pool is the result of the combined action of the recoil pressure of Marangoni
flow and the solid–liquid interface, while buoyancy and gravity only play an
auxiliary role. The existence of the flow vortex of fluid in the weld pool greatly
enhances the convective heat transfer between the high-temperature metal fluid
and the cold fluid, thereby directly affecting the shape and size of the weld pool.
2 Model of Quasi-Steady Weld Pool Dynamics and Numerical Simulation
pool is the result of the combined action of the recoil pressure of Marangoni
flow and the solid–liquid interface, while buoyancy and gravity only play an
auxiliary role. The existence of the flow vortex of fluid in the weld pool greatly
enhances the convective heat transfer between the high-temperature metal fluid
and the cold fluid, thereby directly affecting the shape and size of the weld pool.