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Journal Articles Computers and Fluids Year : 2022

Development of a new OpenFOAM solver for plasma cutting modelling

Abstract

A new OpenFOAM solver is presented, for the simulation of plasma cutting torches. The mathematical model that is introduced is based on the compressible Navier-Stokes equations coupled via source terms to the electric current conservation equation. Due to the conservative and hyperbolic nature of the model, a Godunov-type scheme is used for the first time in the context of plasma cutting simulation. The numerical method consists of a second-order Total Variation Diminishing (TVD) integration with flux Harten-Lax-van Leer-Contact (HLLC) Riemann solver for the flow conservation equations, coupled with a Laplace solver for the current conservation equation. An efficient formulation for the equation of state, accurately taking into account the plasma properties, is also presented. The solver is validated through a set of canonical test cases (shock tubes and 2D Riemann problems) and it is used to simulate a three-dimensional plasma cutting torch. Good agreement is found with the literature, with an improvement in the ability to deal with the shocks occurring during plasma cutting.
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Dates and versions

hal-03661919 , version 1 (08-05-2022)

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Nicolas Godinaud, Pierre Boivin, Pierre Freton, Jean-Jacques Gonzalez, Frédéric Camy-Peyret. Development of a new OpenFOAM solver for plasma cutting modelling. Computers and Fluids, 2022, ⟨10.1016/j.compfluid.2022.105479⟩. ⟨hal-03661919⟩
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