MHD simulations of astrophysical and laboratory jets under different magnetic field configurations

封面

如何引用文章

全文:

开放存取 开放存取
受限制的访问 ##reader.subscriptionAccessGranted##
受限制的访问 订阅存取

详细

This paper presents the results of MHD simulations of astrophysical and laboratory supersonic jets under a superposition of poloidal (Br, Bz) and toroidal (Bϕ) magnetic fields. It is shown that the escaping matter is quickly collimated by the magnetic field. A shock wave of an elongated shape is formed, which moves from the target to the boundary of the chamber, leaving behind a stable flow. A periodic shock wave structure is observed inside the main conical expanding shock wave. It is shown that the toroidal component of the magnetic field remains in the region throughout the entire calculation and plays a role in the collimation of the flow. The poloidal magnetic field decreases in the region of the jet cone, but remains in the simulation region throughout the calculation and also participates in flow collimation. Thus, both components Bz and Bϕ take part in the collimation of the flow by the magnetic field. The width of the jet and the opening angle of the cone Ɵ depend on the magnitude of the magnetic field induction. As the field increases, the jet becomes narrower and the cone angle decreases. Initially, we do not specify the rotation of the jet Ω. However, due to the presence of the Bϕ field, the substance acquires angular velocity and twists along the z axis. The simulation results are in agreement with laboratory jets arising in the experiment at the Neodymium laser installation, and with the previously obtained results of MHD modeling of jet formation separately, in poloidal or toroidal magnetic field.

作者简介

О. Toropina

Space Research Institute, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: toropina@cosmos.ru
俄罗斯联邦, Moscow

G. Bisnovatyi-Kogan

Space Research Institute, Russian Academy of Sciences

Email: toropina@cosmos.ru
俄罗斯联邦, Moscow

S. Moiseenko

Space Research Institute, Russian Academy of Sciences

Email: toropina@cosmos.ru
俄罗斯联邦, Moscow

参考

  1. S. Wilson and Y. Yang, 568(1), 133 (2002).
  2. H. L. Marshall, B. P. Miller, D. S. Davis, E. S. Perlman, M. Wise, C. R. Canizares, and D. E. Harris, 564(2), 683 (2002).
  3. H. L. Marshall, D. E. Harris, J. P. Grimes, J. J. Drake, et al. 549(2), L167 (2001).
  4. S. G. Moiseenko, G. S. Bisnovatyi-Kogan, and N. V. Ardeljan, Monthly Not. Roy. Astron. Soc. 370(1), 501 (2006).
  5. G. S. Bisnovatyi-Kogan, B. V. Komberg, and A. M. Fridman, Soviet Astron. 13, 369 (1969).
  6. G. S. Bisnovatyi-Kogan, in: Proc. 6th Intern. Workshop of the Astronomical Observatory of Capodimonte (OAC 6), Capri, Italy, September 18–21, 1991 (Dordrecht: Kluwer, 1991); edited by L. Errico and A. A. Vittone; Astrophys. Space Sci. Library 186, 369 (1993).
  7. D. D. Ryutov, R. P. Drake, and B. A. Remington, Astrophys. J. Suppl. 127(2), 465 (2000).
  8. S. Bouquet, E. Falize, C. Michaut, C. D. Gregory, B. Loupias, T. Vinci, and M. Koenig, High Energy Density Physics 6(4), 368 (2010).
  9. V. S. Belyaev, G. S. Bisnovatyi-Kogan, A. I. Gromov, B. V. Zagreev, A. V. Lobanov, A. P. Matafonov, S. G. Moiseenko, and O. D. Toropina, Astron. Rep. 62(3), 162 (2018), arXiv:1903.04199 [astro-ph.HE].
  10. O. D. Toropina, G. S. Bisnovatyi-Kogan, and S. G. Moiseenko, Astron. Rep. 67(1), 3 (2023).
  11. V. S. Belyaev, V. I. Vinogradov, A. P. Matafonov, A. M. Chekmarev, and A. G. Karabadzhak, Laser Phys. 16, 477 (2006).
  12. V. I. Mazhukin, A. V. Shapranov, M. M. Demin, A. A. Samokhin, and A. E. Zubko, Mathematica Montisnigri 37, 24 (2016).
  13. V. I. Mazhukin, A. V. Shapranov, M. M. Demin, A. A. Samokhin, and A. E. Zubko, Mathematica Montisnigri 38, 3 (2017).
  14. V. I. Mazhukin, M. M. Demin, and A. V. Shapranov, Appl. Surface Sci. 302, 6 (2014).
  15. Л. Д. Ландау, Е. М. Лившиц, Электродинамика сплошных сред (М.: Наука, 1982).
  16. V. T. Zhukov, A. V. Zabrodin, and O. B. Feodoritova, Comp. Math. and Math. Physics 33(8), 1099 (1993).
  17. Э. Оран, Дж. Борис, Численное моделирование реагирующих потоков (М.: Мир, 1990).
  18. J. P. Boris and D. L. Book, J. Comput. Phys. 11(1), 38 (1973).
  19. V. V. Savelyev and V. M. Chechetkin, Astron. Rep. 39(1), 123 (1995).
  20. V. V. Savelyev, Yu. M. Toropin, and V. M. Chechetkin, Astron. Rep. 40(4), 494 (1996).
  21. O. D. Toropina, M. M. Romanova, Yu. M. Toropin, and R. V. E. Lovelace, 561(2), 964 (2001).
  22. O. D. Toropina, M. M. Romanova, and R. V. E. Lovelace, Monthly Not. Roy. Astron. Soc. 420(1), 810 (2012).

补充文件

附件文件
动作
1. JATS XML
下载

版权所有 © The Russian Academy of Sciences, 2024