文档介绍
| A new
numerical approach is presented, which is used to simulate the dynamic
process of metal transfer. The process of metal transfer in gas metal arc
welding is simulated based on FLUENT. A two-dimensional axisymmetric
numerical model is developed using volume of fluid method and the
distributions of physical quantities including pressure, current density,
electric potential in the droplet are investigated. For improving the
veracity of the simulated results and decreasing the effect of the uncertain
surface tension coefficient on the simulated results, the relationship
between the welding current and surface tension coefficient is modified by
analysis of regression. Meanwhile for testing the accuracy of simulated
results, the welding experiments are performed and the high-speed photography
system is used to record the real process of metal transfer. The results show
that the simulated results are in reasonably good agreement with the
experimental ones. 基于FLUENT的GMAW焊接熔滴过渡的模拟 |
文档标签:
流体力学
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