粒子跟踪和电荷沉积方法在有限元枪程序中的比较

E. Nelson, K. Eppley, J. Petillo, S. Humphries
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引用次数: 1

摘要

一种新的有限元枪代码正在开发中。为了改进枪码模型,最近提出了一个概念,该概念以典型的方式处理场,但包括一个独特的,正式的方法来跟踪粒子和分配源。作为一种新方法,人们担心这种方法的速度、准确性和适合于静电、稳态粒子在电池(PIC)枪模型。为了解决其中的一些问题,各种粒子跟踪和电荷沉积方案在准确性、速度、鲁棒性和对模型的影响方面进行了评估。这包括计算粒子位置电场的各种方法。在本研究中,我们使用SAIC 3D枪代码AVGUN作为测试平台来整合和评估这些方法。本文将对这些方法进行理论分析,并与实证结果进行比较。
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Comparisons of particle tracking and charge deposition schemes for a finite element gun code
A new finite element gun code is under development. In an effort to improve the gun code model, a concept has been proposed recently that treats fields in a typical way, but includes a unique, formal approach to both particle tracking and source allocation. Being a new approach, there are concerns about the speed, accuracy, and appropriateness of this proposal for the electrostatic, steady-state particle-in-cell (PIC) gun model. In order to resolve some of these issues, a variety of particle tracking and charge deposition schemes are being evaluated with respect to accuracy, speed, robustness, and effect on the model. This includes various methods for computing the electric field at the particle locations. For this study, we are using the SAIC 3D gun code AVGUN as a testbed to incorporate and evaluate these methods. Results of a theoretical analysis of the methods will be presented, and a comparison will be made with the empirical results.
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