Fabio Del Sordo
(NORDITA)
18/02/2011, 09:00
In the absence of rotation and shear, and under the
assumption of constant temperature or specific entropy,
purely potential forcing by localized expansion waves is
known to produce irrotational flows that have no vorticity.
Here we study the production of vorticity under idealized
conditions when there is rotation, shear, or baroclinicity,
to address the problem of vorticity generation...
Dr
luiz garcia
(dept pf theoretical physics)
18/02/2011, 09:20
GR MHd dynamo equation of marklund and clarkson (MNRAS-2005)
is used to show that the extra galactic source magnetic
contrast is well within the limit stablished by Reinhardt of
1.7. Actually the result obtained is 2.0 minus expansion
terms in friedmann universe.
Axel Brandenburg
(Nordita)
18/02/2011, 09:40
The turbulent diffusivity tensor is determined for linear
shear flow turbulence using numerical simulations. For
moderately strong shear, the diagonal components are found
to increase quadratically with Peclet and Reynolds numbers
below about 10 and then become constant. The diffusivity
tensor is found to have components proportional to the
symmetric and antisymmetric parts of the...