反应火焰喷涂中颗粒熔化反应过程的数值模拟

Modeling of Melting and Reacting Behavior of Reactive Flame Spray Particles

摘要: 采用有限元分析软件ANSYS研究了自蔓延反应火焰喷涂过程中由钛、B4C及碳三种组元组成的团聚粉颗粒在喷涂焰流中的加热熔化过程,计算了团聚粉颗粒在喷涂过程的温度分布情况.结果表明:粒子在出喷涂枪口后9.5×10-4 s左右发生反应,1.45×10-3 s左右反应结束,由此得出粒子最佳熔化状态在116 mm处左右,模拟结果与试验结果基本吻合.

Abstract: Numerical modeling the melting and the reacting behavior of self-prepagation reactive flame spray particle were made up of Ti,B4C and C by the Finite Element Methos based on ANSYS.The distribution of temperature of the particle in the process of the spray was analyzed.It shows that the SHS reaction happens at 95×10-4 s and it’s over at 1.45×10-3 s after the spray beginning,and that the best melting state of the particle is 164 mm.The modeling results are similar to the results of the test.