"Ideal MHD" not all it's cracked up to be?

Has science taken a wrong turn? If so, what corrections are needed? Chronicles of scientific misbehavior. The role of heretic-pioneers and forbidden questions in the sciences. Is peer review working? The perverse "consensus of leading scientists." Good public relations versus good science.

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MGmirkin
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"Ideal MHD" not all it's cracked up to be?

Post by MGmirkin » Fri Feb 03, 2012 3:23 pm

(Why space physics needs to go beyond the MHD box)
http://www.springerlink.com/content/p365x42162545771/

Someone's finally getting the notion that "Ideal MHD" isn't all it's cracked up to be and we need something better...

Sounds like classic Hannes Alfvén c. 1970's/1980's...

(Electric Currents in Cosmic Plasmas)
http://www.iaea.org/inis/collection/NCL ... 341834.pdf

The good ship Astrophysics is a bit slow to turn...

Sometimes you just need a good particle-based kinetic model rather than a "bulk fluid" approximation to really get things 'correct.'

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~Michael Gmirkin
"The purpose of science is to investigate the unexplained, not to explain the uninvestigated." ~Dr. Stephen Rorke
"For every PhD there is an equal and opposite PhD." ~Gibson's law
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Re: "Ideal MHD" not all it's cracked up to be?

Post by Phorce » Mon Mar 19, 2012 4:23 am

Interesting paper by Alfvén. I eventually worked my through it. Equations and everything :twisted:. There was a lovely comet/magnetotail comparison diagram at the end which I added to my site.

Now, Magneto Hydro Dynamics. I think this is what this model is using with real time inputs ...

Image

To my eye's it still shows electrical activity and flows. I guess someone might feed it an electrical model rather than a fluid one just to see what happens. I wonder if they might make such a thing possible (or already is?) on the iSWA. There are a lot of young, talented web designers who put that thing together by the look of it :idea:.
Exploration and discovery without honest investigation of "extraordinary" results leads to a Double Bind (Bateson, http://en.wikipedia.org/wiki/Double_bind ) that creates loss of hope and depression. No more Double Binds !
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