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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Computational non-chemically equilibrium model on the current zero simulation in a model N-2 circuit breaker under the free recovery condition
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Computational non-chemically equilibrium model on the current zero simulation in a model N-2 circuit breaker under the free recovery condition

机译：自由恢复条件下N-2型断路器中电流零模拟的计算非化学平衡模型

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A non-chemically equilibrium (non-CE) model was established to investigate the N-2 arc plasma in the decaying phase during the arc interruption, and was validated by comparison with the experimental results based on laser Thomson scattering. Unlike the conventional model assuming the local thermodynamic equilibrium (LTE), in this non-CE model, the magneto-hydro-dynamics (MHD) method was coupled with the reaction kinetics to obtain the time-dependent species compositions and properties. The current calculation took into account five species in hot gas and 22 chemical reactions in total. The time-dependent species compositions of hot N-2 were derived from the mass conservation equation for each species, considering the effect of the convection, diffusion and the chemical reaction. The influence of the non-CE compositions on the arc decaying behavior was realized by updating the thermodynamic and transport properties at each iterative step.
机译：建立了非化学平衡（non-CE）模型，以研究电弧中断期间衰变阶段的N-2电弧等离子体，并与基于激光汤姆森散射的实验结果进行了比较，从而验证了该模型的有效性。与假定局部热力学平衡（LTE）的常规模型不同，在此非CE模型中，磁流体动力学（MHD）方法与反应动力学相结合，以获得随时间变化的物种组成和性质。当前的计算考虑了热气中的五种气体和总共22种化学反应。考虑对流，扩散和化学反应的影响，从每个物种的质量守恒方程推导出热N-2的时间依赖性物种组成。通过在每个迭代步骤中更新热力学和传输特性，可以实现非CE成分对电弧衰减行为的影响。

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