Thank you for your interest!
1.The established model and mesh are shown below, with the upper layer of gas and the lower layer of metal matrix. . The laser heat source model used is a Gaussian heat source, which is intended to simulate the flow of the molten pool.
2.I added the VOF model as well as the melt solidification model to establish the surface tension between the two phases (0.82-0.0003*dT as a function of temperature, including a negative surface tension gradient).
However, in this case, no Marangoni flow phenomenon was observed, can you guide me a little, thank you very much.👍👨🎓
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