研究目的
Investigating the dynamics of a liquid metal jet hit by a laser pulse, including deformation and fragmentation processes.
研究成果
The two-step numerical approach effectively models the complex dynamics of liquid metal jet deformation and fragmentation under laser pulse impact, showing good agreement with experimental data. Future work could focus on improving mesh resolution and reducing computational costs.
研究不足
The numerical diffusion in the 3DLINE code and the high computational costs for mesh refinement in OpenFOAM simulations. The discrepancy between simulation and experimental results due to density values and laser energy uncertainties.
1:Experimental Design and Method Selection:
The study used stroboscopic ultrafast shadow photography to visualize the hydrodynamic response of the target to laser pulses. Numerical simulations were conducted in a two-step approach using the 3DLINE code for laser interaction and OpenFOAM for subsequent hydrodynamic modeling.
2:Sample Selection and Data Sources:
A liquid metal jet target formed from a Sn/In eutectic alloy was used. The jet's motion was recorded under vacuum conditions.
3:List of Experimental Equipment and Materials:
Nd:YAG laser system, vacuum chamber, CCD arrays with long-distance microscopes, and the Sn/In eutectic alloy.
4:Experimental Procedures and Operational Workflow:
The jet was irradiated with focused laser pulses, and its motion was recorded at various delay times after the laser impact.
5:Data Analysis Methods:
The data from experiments and simulations were compared to assess the agreement between observed and simulated jet dynamics.
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