Viscous magnus force for the rotating venus ionosphere


Por: Perez-de-Tejada, H

Publicada: 20 mar 2008
Resumen:
The Magnus force applicable to the Venus ionosphere is calculated for the high-altitude transterminator flow that streams around the low-altitude ionospheric plasma that is subject to rotating motion. The Magnus force can account for the observed dawn-dusk (east-west) asymmetry of the Venus nightside ionosphere and is suitable to describe conditions in astrophysical problems in which the plasma of a rotating body interacts with a directional plasma flow. The Magnus force equation is derived including the viscous force term in the momentum equation of the transterminator flow in the Venus upper ionosphere and is examined by comparing the expected dawnward-directed displacement of that flow with the Pioneer Venus Orbiter measurements. Values of the coefficient of the Magnus force equation suitable for the dawnward deflection of the transterminator flow are comparable to those of a rotating sphere subject to a streaming flow in fluid dynamics problems and imply Re similar to 200-300 value

Filiaciones:
Perez-de-Tejada, H:
 Univ Nacl Autonoma Mexico, Inst Geophys, Mexico City 04580, DF, Mexico
ISSN: 20418205





ASTROPHYSICAL JOURNAL LETTERS
Editorial
IOP PUBLISHING LTD, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, Estados Unidos America
Tipo de documento: Article
Volumen: 676 Número: 1
Páginas: 65-68
WOS Id: 000255235800017