Modeling of Ar Induction Thermal Plasma with an Injection of PTFE Powder
Modeling of Ar Induction Thermal Plasma with an Injection of PTFE Powder
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注射 PTFE 粉末的 Ar 感应热等离子体建模
DOI：
10.1541/ieejpes.124.440
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发表时间：
2003
影响因子：
--
通讯作者：
T. Sakuta
中科院分区：
文献类型：
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作者：
Chun Wang;Yasunori Tanaka;T. Sakuta
利用注入PTFE粉末的Ar感应热等离子体模型，初步研究了聚合物烧蚀对热等离子体的影响。考虑了热等离子体与PTFE粉末之间的相互作用，如热传导、熔化、蒸发和辐射等。同时，还对等离子体中粒子的行为进行了研究.计算结果表明，PTFE粉末的注入会导致Ar热等离子体温度场的局部冷却，且随着送粉速率的增加，等离子体温度降低。此外，可以看出，较小的粉末尺寸衰减等离子体更多。另一方面，发现颗粒轨迹和温度历史与粉末装载量、粉末尺寸和颗粒喷射位置有关。对等离子体温度的计算结果与实验结果进行了比较。
Modeling was made of Ar induction thermal plasma with an injection of PTFE powder to study funda-mentally the effects of polymer ablation on thermal plasma. Interactions between thermal plasma and PTFE powder such as heat conduction, melting, evaporation and radiation was simply taken into account. At the same, the behavior of particle in the plasma was also investigated. The predicted results shows that the injection of PTFE powder can cause the local cooling of Ar thermal plasma temperature field, and that increasing powder feed-rate decreases plasma temperature around torch central axis. Moreover, it was seen that smaller powder size decays plasma much more. On the other hand, it is found that particle trajectory as well as temperature history relate to powder loading, powder size and injection location of particle. This calculated result concerning plasma temperature was compared with the experimental result.