Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SIMULATION OF FLOW IN THERMAL PLASMA TORCH UNDER DIFFERENT OPERATING CONDITIONS
Submission Author:
Celso Felipini , SP
Co-Authors:
Marcos Pimenta
Presenter: Celso Felipini
doi://10.26678/ABCM.ENCIT2016.CIT2016-0637
Abstract
The main aim of this article is to present and discuss the results of numerical simulation of flow in a d.c. thermal plasma torch under different operating conditions. The mathematical model (magnetohydrodynamic model) and computer code (based on the Finite Volume Method) developed for the simulations are also presented concisely. A comparison of some results of numerical simulations with the literature was performed in a previous article and showed good agreement in most of the computational domain regions. The numerical simulation results presented in this article were obtained for case studies with different operating conditions and they allowed us to verify the effects of these conditions on the behavior of the temperature and axial velocity profiles of the plasma flow. The simulated operating conditions were: gas flow rate (5, 10 and 15l/min); electric current intensity (100A and 200A); plasmogenic gases (air and argon). The results show that the developed model is suitable for obtaining a better understanding of the phenomena involved (interaction arc / flow) and it is also useful for the optimization of torches.
Keywords
Thermal plasma, Plasma torch, MHD model, Numerical simulation, Finite volume method, Computational fluid dynamics (CFD), Thermal plasma, Plasma torch, MHD model, Numerical simulation, Finite volume method, Computational fluid dynamics (CFD), Thermal plasma, Plasma torch, MHD model, Numerical simulation, Finite volume method, Computational fluid dynamics (CFD)
