Thanks BenLurkin.
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Posted on 01/21/2016 1:45:42 PM PST by BenLurkin
A long-standing discrepancy between predictions and observed results in test reactors has been called "the great unsolved problem" in understanding the turbulence that leads to a loss of heat in fusion reactors.
...
[I]t turns out that interactions between turbulence at the tiniest scale, that of electrons, and turbulence at a scale 60 times larger, that of ions, can account for the mysterious mismatch between theory and experimental results.
...
The expectation by physicists for more than a decade had been that turbulence associated with ions (atoms with an electric charge) was so much larger than turbulence caused by electrons...that the latter would be completely smeared out by the much larger eddies...
The new findings show that this conventional wisdom was wrong on both counts. The two scales of turbulence do indeed coexist, the researchers found, and they interact with each other so strongly that it's impossible to understand their effects without including both kinds in any simulations.
...
Far from being eliminated by the larger-scale turbulence, the tiny eddies produced by electrons continue to be clearly visible in the results, stretched out into long ribbons that wind around the donut-shaped vacuum chamber that characterizes a tokamak fusion reactor. Despite the temperature of 100 million degrees Celsius inside the plasma, these ribbon-like eddies persist for long enough to influence how heat gets dissipated from the swirling mass—a determining factor in how much fusion can actually take place inside the reactor.
Previously, scientists had thought that simply simulating turbulence separately at the two different size scales and adding the results together would give a close enough approximation, but they kept finding discrepancies between those predictions and the actual results seen in test reactors. The new multiscale simulation, Howard says, matches the real results much more accurately.
(Excerpt) Read more at phys.org ...
Back to the drawing board for fusion warming.
Blame Cow farts
Landau damping
Don’t be discouraged. Fusion is only 40 years away. It has been for the past 70 years. ;-)
Looks to me like they may be on the verge of a breakthrough.
Nut heaven knows, I’m no scientist.
Two seconds after fusion becomes a viable energy source,
look for some liberal to try to ban it.
Wow. Just looked that up on Wikipedia.
WAY over my head!
[ Two seconds after fusion becomes a viable energy source,
look for some liberal to try to ban it. ]
Paul R. Ehrlich ~ Liberal Wonk and Propagandist
“Giving society cheap, abundant energy... would be the equivalent of giving an idiot child a machine gun. “
I do not trust these Libtard Control freaks like Paul E
Because they'll likely be in the pocket of the major oil companies.
There was a kernel of truth in the movie Chain Reaction. Fusion energy will not be well received by TPTB.
That’s an easy one to explain. Someone left a window open.
That’s not the motivation I was thinking of.
See the post above yours for the motivation that most leftists would have.
Affordable energy = freedom
Thanks BenLurkin.
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