Formation And Development Of Cathode Spot Results From Simulation

By keluhanqu On Sep 21, 2024 Last updated

Formation And Development Of Cathode Spot Results From Simulation The simulation results show that a smooth cathode surface is advantageous for reducing ablation, the ablation on the cucr alloy is smaller than that on the pure metal cathode electrode, and the cathode spot appears on the chromium grain only on cucr. the simulation results are in good agreement with the experiment. A two dimensional (2d) rotary axisymmetric model has been developed to describe the formation and development of cathode spot in vacuum arc. the model includes hydrodynamic equations and heat transfer equation which considers surface evaporation and joule heating. parameters used in this model, such as the distributions of pressure, energy flux.

Simulation Of Cathode Spots Crater Formation On Electrodes With Micro The two dimensional (2d) rotary axisymmetric model is used to describe the formation and development of a cathode spot on a copper chromium alloy (cucr) in a vacuum arc. the model includes hydrodynamic equations and the heat transfer equation. parameters used in this model come from experiments and other researchers' work. the influence of parameters is analyzed, and the simulation results are. The size of the crater is found to be determined by the spatial distribution of the injected ions. the formation of the cathode spot is also scrutinised by electron emission from the cathode surface with variable surface temperature during the cathode spot development process. in addition, the evaporated atoms forming the metal vapour are observed. G.a. mesyats, 2d semiempirical model of the formation of an elementary crater on the cathode of a vacuum arc, 27th isdeiv, 2016:349 352. some parameters of copper and chromium, tm is the melting point, copper is 1355k and chromium is 2133k. the background plasma density is 1025 m3 and arc viscosity is 1.5×10 4pa×s. Formation and development of cathode spot, results from simulation number 1. maximum temperature varies with time, results from simulation 1. melting metal at 20.1 ns, results from simulation.

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