Streamline generation code for particle dynamics description in numerical models of turbulence
文献类型：期刊论文
| 作者 | Dalena, S.; Chuychai, P.; Mace, R. L.; Greco, A.; Qin, G. ; Matthaeus, W. H.
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| 刊名 | COMPUTER PHYSICS COMMUNICATIONS
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| 出版日期 | 2012 |
| 卷号 | 183期号:9页码:1974-1985 |
| ISSN号 | 0010-4655 |
| 关键词 | Test particle simulations Streamline code Diffusion |
| 通讯作者 | Dalena, S (reprint author), Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, CS, Italy. |
| 中文摘要 | Streamline Version 4 is a versatile Fortran 77 & C++ program for calculating charged test particle trajectories or field-lines for user-specified fields using the test-particle method. The user has the freedom to specify any type of field (analytical, tabulated in files, time dependent, etc.) and maintains complete control over initial conditions of trajectories/field-lines and boundary conditions of specified fields. The structure of Streamline was redesigned from previous versions in order to know not only particle or field-lines positions and velocities at each step of the simulations, but also the instantaneous field values as seen by particles. This was made to compute the instantaneous value of the particle's magnetic moment, but other applications are possible too. Accuracy tests of the code are shown for different cases, i.e., particles moving in constant magnetic field, magnetic plus constant electric field and wave field. In addition in the last part of the paper we concentrate our discussion on the study of velocity space diffusion of charged particles in turbulent slab fields, paying attention to the discretization of the fields and the temporal discretization of the dynamical equations. The diffusion of charged particles is a very common topic in plasma physics and astrophysics since it plays an important role in many different phenomena such as stochastic particle acceleration, diffusive shock acceleration, solar energetic particle propagation, and the scattering required for the solar modulation of galactic cosmic rays. (C) 2012 Elsevier B.V. All rights reserved. |
| 英文摘要 | Streamline Version 4 is a versatile Fortran 77 & C++ program for calculating charged test particle trajectories or field-lines for user-specified fields using the test-particle method. The user has the freedom to specify any type of field (analytical, tabulated in files, time dependent, etc.) and maintains complete control over initial conditions of trajectories/field-lines and boundary conditions of specified fields. The structure of Streamline was redesigned from previous versions in order to know not only particle or field-lines positions and velocities at each step of the simulations, but also the instantaneous field values as seen by particles. This was made to compute the instantaneous value of the particle's magnetic moment, but other applications are possible too. Accuracy tests of the code are shown for different cases, i.e., particles moving in constant magnetic field, magnetic plus constant electric field and wave field. In addition in the last part of the paper we concentrate our discussion on the study of velocity space diffusion of charged particles in turbulent slab fields, paying attention to the discretization of the fields and the temporal discretization of the dynamical equations. The diffusion of charged particles is a very common topic in plasma physics and astrophysics since it plays an important role in many different phenomena such as stochastic particle acceleration, diffusive shock acceleration, solar energetic particle propagation, and the scattering required for the solar modulation of galactic cosmic rays. (C) 2012 Elsevier B.V. All rights reserved. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3308]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Dalena, S.,Chuychai, P.,Mace, R. L.,et al. Streamline generation code for particle dynamics description in numerical models of turbulence[J]. COMPUTER PHYSICS COMMUNICATIONS,2012,183(9):1974-1985. |
| APA | Dalena, S.,Chuychai, P.,Mace, R. L.,Greco, A.,Qin, G.,&Matthaeus, W. H..(2012).Streamline generation code for particle dynamics description in numerical models of turbulence.COMPUTER PHYSICS COMMUNICATIONS,183(9),1974-1985. |
| MLA | Dalena, S.,et al."Streamline generation code for particle dynamics description in numerical models of turbulence".COMPUTER PHYSICS COMMUNICATIONS 183.9(2012):1974-1985. |
入库方式： OAI收割
来源：国家空间科学中心
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