Eingang zum Volltext
Home | Suche | BrowsenURN: urn:nbn:de:kobv:517-opus-14686
URL: http://opus.kobv.de/ubp/volltexte/2007/1468/
Seehafer, Norbert ; Schumacher, Jörg
Resistivity profile and instability of the plane sheet pinch
| pdf-Format: |
|
Kurzfassung auf Englisch
The stability of the quiescent ground state of an incompressible, viscous and electrically conducting fluid sheet, bounded by stress-free parallel planes and driven by an external electric field tangential to the boundaries, is studied numerically. The electrical conductivity varies as cosh–2(x1/a), where x1 is the cross-sheet coordinate and a is the half width of a current layer centered about the midplane of the sheet. For a <~ 0.4L, where L is the distance between the boundary planes, the ground state is unstable to disturbances whose wavelengths parallel to the sheet lie between lower and upper bounds depending on the value of a and on the Hartmann number. Asymmetry of the configuration with respect to the midplane of the sheet, modelled by the addition of an externally imposed constant magnetic field to a symmetric equilibrium field, acts as a stabilizing factor.
| PACS - Klassifikation | 95.30.Qd , 52.30.-q , 47.65.+a | |
| Institut 1: | Institut für Physik und Astronomie | |
| Institut 2: | Interdisziplinäres Zentrum Dynamik komplexer Systeme | |
| DDC-Sachgruppe: | Physik | |
| Dokumentart: | c Preprint (Vorabdruck) | |
| Schriftenreihe: | NLD Preprints | |
| Band Nummer: | paper 044 | |
| Sprache: | Englisch | |
| Erstellungsjahr: | 1998 | |
| Publikationsdatum: | 06.07.2007 |
Home | Leitlinien | Impressum | Haftungsausschluss | Statistik | Universitätsverlag | Universitätsbibliothek
| Ihr Kontakt für Fragen und
Anregungen: Universitätsbibliothek Potsdam |
 
|