讨论了在FLUENT中可用的通用的多相流模型。主要提供了多相流模型的简要介绍，讨论了Lagrangian离散相模型，FLUENT中的凝固和熔化模型。-General multiphase flow model

焊接领域的流体力学仿真计算，采用ANSYS fluent 编写的udf，适用于初级教学或者入门级学者进行分享学习(Fluid dynamics simulation calculation in welding field, using UDF written by ANSYS fluent, suitable for primary teaching or entry-level scholars to share learning)