Magnetohydrodynamic instability of the surface metal layer melted by pulsed current
Samuilov S D.1, Shcherbakov I. P. 1, Bocharov Y.N. 2, Krivosheev S. I. 2, Magazinov S. G. 2
1Ioffe Institute, St. Petersburg, Russia
2Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg, Russia
Email: sam.mhd@mail.ioffe.ru, Unbocharov@yandex.ru, ksi.mgd@spbstu.ru, magazinov_sg@mail.ru

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It is shown that the results of dispersion of various materials in the mode of pulsed current action correspond to theoretical estimates of the wavelength of MHD instability. The sizes of the obtained metal grain, including refractory ones, correspond to the modes of exposure, and their microstructure corresponds to the conditions of formation. Modeling in the Comsol Multiphysics environment at a qualitative level revealed the influence of the thickness of the surface layer of the current flow on the dynamics of the formation and separation of liquid metal droplets. It is shown that one of the operating factors that create and increase instabilities is the heterogeneity of the distribution of Lorentz forces in the current supply zone. Keywords: electric explosion, surface effect, grain (micro-ingots), numerical simulation.
  1. V.I. Oreshkin, R.B. Baksht. IEEE Tr. Plasma Sci., 48 (5), 1214 (2020). DOI: 10.1109/TPS.2020.2985100
  2. N.V. Volkov, E.L. Fen'ko, A.E. Mayer, A.P. Yalovets, V.S. Sedoi. Tech. Phys., 55 (4), 509 (2010)
  3. V. Sorokin. Additivnye tekhnologii, 3, 21 (2022). (in Russian)
  4. V.S. Klimov, D.A. Karyagin, P.A. Erokhin. Tekhnologiya legkikh splavov, 3, 49 (2022).(in Russian)
  5. G.S. Garibov. Tekhnologiya legkikh splavov, 2, 38 (2021). (in Russian)
  6. K.B. Abramova, N.A. Zlatin, B.P. Peregud. ZhETF, 69 (6), 2007 (1975). (in Russian)
  7. M.L. Lev, B.P. Peregud, Z.V. Fedichkina. ZhTF, 46 (1), 125 (1976) (in Russian)
  8. S.D. Samuilov, A.A. Semenov. Magnitnaya gidrodinamika, 3, 4 (1987). (in Russian)
  9. S.D. Samujlov, A.A. Semenov. ZhTF, 62 (8), 38 (1992). (in Russian)
  10. K.B. Abramova, B.P. Peregud, S.D. Samuilov, A.A. Semenov. Nauchno-tekhnicheskie dostizheniya, 6, 17 (1988). (in Russian)
  11. S.D. Samuilov. Proc. of the 15th International School-Conference on "New materials --- Materials of Innovative Energy: Development, Characterization Methods and Application" (Moscow, Russia, 2017), p. 524. DOI: 10.18502/kms.v4i1.2214
  12. S.D. Samujlov. Tekhnologiya metallov, 1, 6 (2018). (in Russian)
  13. G.A. Shvetsov, A.G. Anisimov, A.D. Matrosov. IEEE Tr. Magn. 39 (1), 82 (2003)
  14. E.I. Starovojtenko. Tekhnologiya legkikh splavov, 1, 4 (2022). (in Russian)
  15. S.B. Batuev, Sh.M. Shejkhaliev, S.I. Popel, V.A. Kozmin. AS. 1121101 (SSSR). B.I., 40 (1984). (in Russian)
  16. S.A. Chaikovsky, V.I. Oreshkin, I.M. Datsko, N.A. Labetskaya, D.V. Rybka, N.A. Ratakhin. Phys. Plasmas, 22 (11), 112704 (2015). DOI: 10.1063/1.4935401
  17. V.I. Oreshkin, S.A. Chaikovsky, I.M. Datsko, N.A. Labetskaya, G.A. Mesyats, E.V. Oreshkin, N.A. Ratakhin, D.V. Rybka. Phys. Plasmas, 23 (12), 122107 (2016). DOI: 10.1063/1.4971443
  18. S.I. Krivosheev, S.G. Magazinov, G.A. Shneerson. Pisma v ZhTF, 45 (3), 41 (2019) (in Russian). DOI: 10.21883 (in Russian)
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