Numerical model of a cutting torch

MANCINELLI ,BEATRIZ; MINOTTI , FERNANDO; KELLY, HÉCTOR

Journal of Physics: Conference Series

IOP

Año: 2014 vol. 511 p. 2071 - 2077

1742-6588

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.