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16 August 2000 Three-dimensional hydrodynamic simulation of laser-induced melting and evaporation
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Proceedings Volume 4065, High-Power Laser Ablation III; (2000)
Event: High-Power Laser Ablation, 2000, Santa Fe, NM, United States
We have succeeded for the first time to simulate dynamic phase transition from metal to vapor. This success is due to the CIP (Cubic-Interporated Pseudoparticle/Propagation) method that can treat solid, liquid and gas together and can trace a sharp interface with almost one grid. We report here the application to laser-induced evaporation and welding process. In the former case, aluminum is evaporated well after the laser beam ended and evaporation occurs with a large angle to the target normal leading to large debris. In the latter case, a deep penetration welding of SUS304 by YAG laser has been successfully replicated the experiments and the simulation clarifies the formation mechanism of keyhole.
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Takashi Yabe "Three-dimensional hydrodynamic simulation of laser-induced melting and evaporation", Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000);


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