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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-1774
DTSTART:20100212T220000Z
DURATION:PT1H0M0S
DTSTAMP:20240328T140153Z
LAST-MODIFIED:20100208T185213Z
LOCATION:2241 Chamberlin Hall (coffee at 3:30 pm)
SUMMARY:Magnetohydrodynamic Turbulence\, Physics Department Colloquium
\, Stanislav Boldyrev\, University of Wisconsin\, Department of Physic
s
DESCRIPTION:Magnetic fields are ubiquitous in the universe. Their inte
raction with an electrically conducting fluid gives rise to a complex
system - a magnetofluid - whose dynamics is quite distinct from that o
f either a non conducting fluid\, or that of a magnetic field in a vac
uum. The scales of these interactions vary in nature from meters to me
gaparsecs and in most situations\, the dissipative processes occur on
small enough scales that the resulting flows are turbulent.
\n
\nThere are significant differences between regular fluid turbulence
and magnetohydrodynamic turbulence. We are constantly immersed in regu
lar turbulence. We have a direct experience of it in our everyday life
. Thus our development of models and theories of regular turbulence is
strongly guided by experimental data and intuitions. Not so for magne
tohydrodynamic (MHD) turbulence. Even though MHD turbulence is very wi
despread in the universe\, we have practically no direct experience of
it in our daily pursuits. Rather\, we have to rely on numerical simul
ations and\, to a lesser extent\, observations and experiments. The pu
rpose of this talk is to discuss what is currently known about the pro
perties of magnetohydrodynamic turbulence.
URL:https://www.physics.wisc.edu/events/?id=1774
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