Development of Strongly Dissipative Mhd Structures
A plasma flow near a stagnation point, which may be produced by a local squeezing in one direction with outflow on both sides of a central channel, convects a magnetic field towards the inner layer, while enhancement of the initial magnetic energy and formation of a current sheet with intense Joule...
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1992
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| LEADER | 04878caa a22004937a 4500 | ||
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| 001 | PAPER-12671 | ||
| 003 | AR-BaUEN | ||
| 005 | 20241008085056.0 | ||
| 008 | 190411s1992 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0027003897 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Gratton, F.T. | |
| 245 | 1 | 0 | |a Development of Strongly Dissipative Mhd Structures |
| 260 | |c 1992 | ||
| 504 | |a Priest, E., The MHD of current sheets (1985) Rev. Prog. Phys., 48, pp. 995-1090 | ||
| 504 | |a Vasyliunas, V.M., Theoretical models of magnetic field merging (1975) Rev. Geophys. Space Phys., 13, pp. 303-336 | ||
| 504 | |a Sonnerup, B.U.Ö., Magnetic field reconnection (1979) Solar System Plasma Physics, 3, pp. 47-108. , L. T. Lanzerotti et al., Eds., North Holland | ||
| 504 | |a Clark, A., Jr., Production and dissipation of magnetic energy by differential fluid motions (1964) Phys. Fluids, 7, pp. 1299-1305 | ||
| 504 | |a Heyn, M.F., Non-steady dissipative MHD flows (1992) Current Topics in Astrophysical and Fusion Plasma Research, pp. 53-59. , M. F. Heyn and W. Kernbichler, Eds. Technical University of Graz Press | ||
| 504 | |a Gratton, F.T., Heyn, M.F., Biernat, H.K., Rijnbeek, R.P., Gnavi, G., MHD stagnation point flows in the presence of resistivity and viscosity (1988) J. Geophys. Res., 93, pp. 7318-7324 | ||
| 504 | |a Phan, T.D., Sonnerup, B.U.Ö., MHD stagnation-point flows at a current sheet including viscous and resistive effects (1990) J. Plasma Phys., 44, pp. 525-546 | ||
| 504 | |a Sonnerup, B.U.Ö., Priest, E., Resistive MHD stagnation-point flows at a current sheet (1975) J. Plasma Phys., 14, pp. 283-294 | ||
| 504 | |a Priest, E., Current sheets (1981) Solar Flare MHD, , E. Priest Ed. London: Gordon and Breach, 1981, ch. 3 | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a A plasma flow near a stagnation point, which may be produced by a local squeezing in one direction with outflow on both sides of a central channel, convects a magnetic field towards the inner layer, while enhancement of the initial magnetic energy and formation of a current sheet with intense Joule dissipation rates take place when the magnetic Reynolds number is large. In systems with no magnetic flux injection, starting from a generic initial magnetic field and after a transient in which amplification followed by annihilation of the odd component occurs, a large even magnetic remnant concentrated in a thin slab is formed in a few hydrodynamic times. If the pressure gradient that drives the motion is switched off, the magnetic field extinguishes at a much slower pace than the corresponding buildup process. When there is continuous magnetic flux injection, the even component of the magnetic field, in general, becomes dominant over the odd part after some number of hydrodynamic times. For astrophysical plasmas the significance of the mechanism considered here is that i) fast dissipation of magnetic energy does not invoke anomalous resistivity, and ii) neutral sublayers where change of sign of magnetic field occurs may vanish during the current sheet evolution, so that steady-state configurations prone to processes of reconnection or tearing instabilities do not develop. © 1992 IEEE |l eng | |
| 536 | |a Detalles de la financiación: 366 89/91 | ||
| 536 | |a Detalles de la financiación: Manuscript received January 31, 1992; revised August 16, 1992. This work was supported by Conicet PID Fisica Te6rica de Plasmas (No. 366 89/91) and Conicet-Infip. | ||
| 593 | |a Instituto de Física del Plasma, Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Departamento de Fisica, Universidad de Buenos Aires Ciudad Universitaria, Pab. I, 1428, Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a MAGNETIC FIELDS |
| 690 | 1 | 0 | |a MAGNETOHYDRODYNAMICS |
| 690 | 1 | 0 | |a NUMERICAL ANALYSIS |
| 690 | 1 | 0 | |a CURRENT SHEETS |
| 690 | 1 | 0 | |a JOULE DISSIPATION |
| 690 | 1 | 0 | |a MAGNETIC ENERGY |
| 690 | 1 | 0 | |a PLASMA STABILITY |
| 700 | 1 | |a Gnavi, G. | |
| 700 | 1 | |a Bender, Laurence Eugene | |
| 773 | 0 | |d 1992 |g v. 20 |h pp. 882-890 |k n. 6 |p IEEE Trans Plasma Sci |x 00933813 |w (AR-BaUEN)CENRE-1895 |t IEEE Transactions on Plasma Science | |
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| 856 | 4 | 0 | |u https://doi.org/10.1109/27.199543 |x doi |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_00933813_v20_n6_p882_Gratton |x handle |y Handle |
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| 961 | |a paper_00933813_v20_n6_p882_Gratton |b paper |c PE | ||
| 962 | |a info:eu-repo/semantics/article |a info:ar-repo/semantics/artículo |b info:eu-repo/semantics/publishedVersion | ||