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<p>Numerical simulation of magnetohydrodynamic processes in the channel of a reverse polarity melting plasmatron with an arc sustained in an atmospheric pressure argon environment at a current of 200 A has been carried out. The case of distributed arc attachment on the surface of the flat copper anode of the plasmatron under conditions of radial and radial-axial argon injections at flow rates of 1.5–6 g/s was considered. Based on the calculation results for both argon injection options, dependences of the current density and heat flux density on the argon flow rate were obtained. The obtained results indicate the possibility of controlling the thermal load on the plasmatron anode, which ultimately creates opportunities for technological solutions that increase its operational lifetime.</p>

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Numerical Simulation of the Influence of Argon Injection on the Magnetohydrodynamic Flow and Thermal Balance of the Flat Anode of a Melting Plasmatron

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • S. M. Aul’chenko,
  • V. V. Belyaev,
  • O. B. Kovalev

摘要

Numerical simulation of magnetohydrodynamic processes in the channel of a reverse polarity melting plasmatron with an arc sustained in an atmospheric pressure argon environment at a current of 200 A has been carried out. The case of distributed arc attachment on the surface of the flat copper anode of the plasmatron under conditions of radial and radial-axial argon injections at flow rates of 1.5–6 g/s was considered. Based on the calculation results for both argon injection options, dependences of the current density and heat flux density on the argon flow rate were obtained. The obtained results indicate the possibility of controlling the thermal load on the plasmatron anode, which ultimately creates opportunities for technological solutions that increase its operational lifetime.