Numerical modeling of a cutting torch

15th International Congress on Plasma Physics; 13th Latin American Workshop on Plasma Physics

Mancinelli, B.R.^1 ; Minotti, F.O.^1,2 ; Kelly, H.^1,2

Grupo de Descargas Eléctricas, Departamento Ing. Electromecánica, Universidad Tecnológica Nacional, Regional Venado Tuerto, Laprida 651, Venado Tuerto (2600) Santa Fe, Argentina^1

Instituto de Física Del Plasma (CONICET), Departamento de Fisica, Ciudad Universitaria Pab. i, (1428) Buenos Aires, Argentina^2

关键词: Cutting performance;    Cutting torch;    High energy densities;    Local thermodynamic equilibrium;    Low currents;    Plasma temperature;    Turbulent models;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/511/1/012071/pdf
DOI  :  10.1088/1742-6596/511/1/012071

来源: IOP

【 摘 要 】

A two-dimensional turbulent model of a low-current intensity (30 A) cutting plasma torch was developed using the local thermodynamic equilibrium approximation. A good agreement was found between measured and modelled results of plasma temperature and velocity, the latter of which has not been previously reported in the literature for high energy density torches. The cutting performance was also studied in terms of the heat flux to the work-piece and the value of the force exerted by the impinging plasma jet.