Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi Üniversitesi, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2016
Student: WALEED KHALED WALEED SUNJUQ
Supervisor: ABUZER ÖZSUNAR
Open Archive Collection: AVESIS Open Access Collection
Abstract:In this study a typical non-transferred argon DC plasma torch geometry has been developed. The plasma torch to be designed for the aim, to be simple and suitable for frequent changes of parameters used in regular cell structure analysis and factors such as the ease of production were taken into consideration. The study was carried out in 3-D and turbulent flow, steady state analyzes were performed. Then, the ANSYS Fluent software and MHD module were used together in order to solve the interaction between electromagnetic fields and gas flow rates in this geometry, the results of the torch had been obtained by changing the parameters of the developed geometry like the electric current and the gas flow rates. The obtained results are presented and compared with the studies conducted previously in the literature and it was found to be in compliance with them. The changing of the plasma varying properties like temperature, velocity, the average outlet temperature and velocity, the arc attachment point and the arc length were studied. The temperature, velocity, arc length, arc root formation and the average temperature and velocity distributions are presented. It has been noticed that the plasma temperature at the nozzle exit increases by increasing the gas flow rate or the given electrical current. And by increasing the electrical current the arc attachment point slides toward the torch inlet, while it slides away from it by increasing the inlet gas flow rate.