Article View: sci.geo.fluids
Article #14Re: Coherent structures
From: Bruce Scott
Date: Wed, 29 Jul 1992 14:26
Date: Wed, 29 Jul 1992 14:26
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fearnley@ERE.UMontreal.CA (Fearnley Anne) writes:
>give me some references, I will be very grateful.
A recent reference which discusses both plasmas and geo-fluids is
A Hasegawa, Adv Phys 34, 1 (1985).
> As well, how about some opinions on the subject itself, with
>supporting arguments. Some folks think the coherent structure business
>is rubbish and a craze, and some think its the key to turbulence.
Understanding why coherent structures (usually long-lived monopolar or
dipolar vortices) emerge from turbulence and survive it is interesting
and important. However, the practical importance is overblown. Most of
the results are specific to homogeneous and isotropic situations, which
do not describe the important natural ones. In plasmas, inhomogeneity
usually kills these things. Claims that coherent solitons can explain
turbulent transport of heat, particles, or momentum is certainly going
too far.
Gruss,
Dr Bruce Scott The deadliest bullshit is
Max-Planck-Institut fuer Plasmaphysik odorless and transparent
bds at spl6n1.aug.ipp-garching.mpg.de -- W Gibson
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Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!gatech!rutgers!concert!samba!usenet From: Bruce.Scott@bbs.oit.unc.edu (Bruce Scott) Newsgroups: sci.geo.fluids Subject: Re: Coherent structures Summary: review reference, effects of inhomogeneity Keywords: turbulence Message-ID: <1992Jul29.142638.4518@samba.oit.unc.edu> Date: 29 Jul 92 14:26:38 GMT References: <1992Jul28.014855.27248@cc.umontreal.ca> Sender: usenet@samba.oit.unc.edu Organization: Extended Bulletin Board Service Lines: 31 Nntp-Posting-Host: lambada.oit.unc.edu