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| 准中性等离子体模拟中的两种渐近保持PIC算法研究 | |
| 引用本文： | 孙安邦,毛根旺,P.Degond,F.Deluzet,L.Navoret,M.-H.Vignal,夏广庆. 准中性等离子体模拟中的两种渐近保持PIC算法研究[J]. 真空科学与技术学报, 2010, 30(1). DOI: 10.3969/j.issn.1672-7126.2010.01.02 |
| 作者姓名： | 孙安邦 毛根旺 P.Degond F.Deluzet L.Navoret M.-H.Vignal 夏广庆 |
| 作者单位： | 1. 西北工业大学航天学院,西安,710072;保尔·萨巴蒂埃大学,图卢兹,法国,31062 2. 西北工业大学航天学院,西安,710072 3. 保尔·萨巴蒂埃大学,图卢兹,法国,31062 |
| 摘 要： | 针对准中性无碰撞等离子体的Vlasov方程及与其相耦合的求解电势的Poisson方程所组成的Vlasov-Poisson系统,提出了两种渐近保持PIC算法,并将其运用到一维周期性波动等离子体模型上。与传统PIC算法相比较,两种渐近保持PIC算法解决了Vlasov-Poisson系统多尺度参数中的小量束缚问题,时间和空间步长的选取可以克服传统粒子模型中等离子体周期及德拜长度的限制,且模拟结果稳定正确,大大提高了计算效率。 |
| 关 键 词： | 渐近保持 准中性 多尺度 |
Development of Two Asymptotic-Preserving Particle-in-Cell Methods in Quasi-Neutral Plasma Simulation |
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| Sun Anbang,Mao Genwang,P.Degond,F.Deluzet,L.Navoret,M.-H.Vignal,Xia Guangqing. Development of Two Asymptotic-Preserving Particle-in-Cell Methods in Quasi-Neutral Plasma Simulation[J]. JOurnal of Vacuum Science and Technology, 2010, 30(1). DOI: 10.3969/j.issn.1672-7126.2010.01.02 | |
| Authors: | Sun Anbang Mao Genwang P.Degond F.Deluzet L.Navoret M.-H.Vignal Xia Guangqing |
| Affiliation: | Sun Anbang*1,2,Mao Genwang1,P.Degond2,F.Deluzet2,L.Navoret2,M.-H.Vignal2,Xia Guangqing1(1.College of Astronautics,Northwestern Polytechnical University,Xi'an,710072,China,2.University Paul Sabatier,Toulouse,France,31062) |
| Abstract: | We addressed the solutions of the collision-less plasma Vlasov-Poisson system,involving Vlasov equation coupled with Poison equation,in quasi-neutral limit.The two asymptotic-preserving particle-in-cell(PIC)methods were developed and applied to a model of one-dimensional,periodic perturbation plasma.The advantages of the two asymptotic-preserving PIC schemes over the conventional PIC method include a solution to smaller scale constrain of the multi-scale problem of physical parameters in Vlasov-Poisson syst... |
| Keywords: | Vlasov-Poisson PIC Asymptotic preserving Vlasov-Poisson Quasi-neutral PIC Multi-scale |
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