Shear flow instability in the dipolar magnetosphere
نویسندگان
چکیده
منابع مشابه
Interface instability in shear-banding flow.
We report on the spatiotemporal dynamics of the interface in shear-banding flow of a wormlike micellar system (cetyltrimethylammonium bromide and sodium nitrate in water) during a start-up experiment. Using the scattering properties of the induced structures, we demonstrate the existence of an instability of the interface between bands along the vorticity direction. Different regimes of spatiot...
متن کاملRadiation Instability in a Stratified Shear Flow
The paper deals with a new mechanism of instability in stratified fluid caused by internal wave radiation from a shear layer. This radiation instability may be explained in terms of the negativeenergy wave concept. These waves are able to grow due to radiation losses. The dispersion relation and non-linear stage of the process are analyzed through a model with tangential velocity discontinuity....
متن کاملLong wavelength instability for uniform shear flow.
Uniform shear flow is a prototype non-equilibrium state admitting detailed study at both the macroscopic and microscopic levels via theory and computer simulation. It is shown that the hydrodynamic equations for this state have a long wavelength instability. This result is obtained first from the NavierStokes equations and shown to apply at both low and high densities. Next, higher order rheolo...
متن کاملResistive tearing instability with equilibrium shear flow
The effect of equilibrium velocity shear on the resistive tearing instability has been systematically studied, using the boundary layer approach. Both the "constant-f/!" tearing mode, which has a growth rate that scales as S -3/5, and the "nonconstant-f/!" tearing mode [a' (as) -1/3» 1], which has a growth rate that scales as S -1/3, are analyzed in the presence of flow. Here S is the usual rat...
متن کاملGeneration of ripples by shear - flow instability
We consider the linear stability of a monotonically decreasing, concave shear flow beneath a free surface with gravity and capillarity. An archetypical example, with current U = U0 exp(z/h), is solved analytically and studied in detail. Comparison with several other smooth velocity profiles indicates that the exponential profile is representative of all smooth monotonic concave velocity profile...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 1999
ISSN: 0148-0227
DOI: 10.1029/1999ja900180