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首页> 外文期刊>Computer physics communications >Calculation of two-dimension radial electric field in boundary plasmas by using BOUT plus
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Calculation of two-dimension radial electric field in boundary plasmas by using BOUT plus

机译：使用Bout Plus计算边界等离子体中的两维径向电场

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The steady state radial electric field (Er) is calculated by coupling a plasma transport model with the quasi-neutrality constraint and the vorticity equation within the BOUT++ framework. Based on the experimentally measured plasma density and temperature profiles in Alcator C-Mod discharges, the effective radial particle and heat diffusivities are inferred from the set of plasma transport equations. The effective diffusivities are then extended into the scrape-off layer (SOL) to calculate the plasma density, temperature and flow profiles across the separatrix into the SOL with the electrostatic sheath boundary conditions (SBC) applied on the divertor plates. Given these diffusivities, the electric field can be calculated self-consistently across the separatrix from the vorticity equation with SBC coupled to the plasma transport equations. The sheath boundary conditions act to generate a large and positive Er in the SOL, which is consistent with experimental measurements. The effect of magnetic particle drifts is shown to play a significant role on local particle transport and Er by inducing a net particle flow in both the edge and SOL regions. (C) 2018 Elsevier B.V. All rights reserved.
机译：通过将等离子体传输模型与Bout ++框架内的准中立约束和涡度方程耦合来计算稳态径向电场（ER）。基于在Alcator C-MOM放电中的实验测量的等离子体密度和温度曲线，从该组等离子体传输方程推断出有效的径向颗粒和热扩散。然后将有效扩散延伸到刮削层（溶胶）中，以计算与施加在转板板上的静电护套边界条件（SBC）穿过分离器中的等离子体密度，温度和流动谱。鉴于这些扩散性，电场可以通过耦合到等离子体传输方程的SBC的涡旋等式来自始于分离rix来自始终计算。鞘边界条件在溶胶中产生大且正的ER，这与实验测量一致。磁性颗粒漂移的效果显示在局部颗粒运输和ER上发挥着重要作用，通过在边缘和溶胶区域中诱导净颗粒流动。 （c）2018 Elsevier B.v.保留所有权利。

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