Darwin–Vlasov simulations of magnetised plasmas

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• 作者：H. Schmitz and R. Grauer
• 关键词：Vlasov simulations ; Positive flux-conservative scheme ; Darwin approximation ; Boris scheme ; Reconnection
• 刊名：Journal of Computational Physics
• 出版年：2006
• 出版时间：20 May 2006
• 年：2006
• 卷：214
• 期：2
• 页码：738-756
• 全文大小：496 K

文摘

We present a new Vlasov code for collisionless plasmas in the nonrelativistic regime. A Darwin approximation is used for suppressing electromagnetic vacuum modes. The spatial integration is based on an extension of the flux-conservative scheme, introduced by Filbet et al. [F. Filbet, E. Sonnendrücker, P. Bertrand, Conservative numerical schemes for the Vlasov equation, J. Comput. Phys. 172 (2001) 166]. Performance and accuracy is demonstrated by comparing it to a standard finite differences scheme for two test cases, including a Harris sheet magnetic reconnection scenario. This comparison suggests that the presented scheme is a promising alternative to finite difference schemes.