Search found 819 matches

by icarus
Tue Jul 22, 2008 7:37 pm
Forum: Theory
Topic: Where's the beef?
Replies: 132
Views: 36838

These are some of the facts that make it less than a pseudo-science as painted by some not so charitable slurs. To prove that it will not work 'a priori' by calculation Art needs to spell out ALL his assumptions (and justify them), right back to first principles and follow the calculations through t...
by icarus
Fri Jul 18, 2008 9:34 pm
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

tombo: I was under the impression that the gradient and the curvature were intimately related. In 2-d yes, in the 3D most likely but exactly how, well that is one of the great open questions for mathematical physics I think. How do you relate a 3-d curl to a twisted, curved streamsurface? So, you th...
by icarus
Fri Jul 18, 2008 8:47 pm
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

Some more replies: drmike: I'm trying to do a write-up of the math, I do latex but have real job and mortgage also. The important thing was to scratch out the bare bones enough to get it into a code. The concept is sound as you'll see in the Jerry Kevorkian reference I gave above and can be derived ...
by icarus
Fri Jul 18, 2008 8:27 pm
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

tombo: if you read your pictured text carefully you'll see that the equations say that the plasma is unstable in the direction of decreasing magnetic field strength . The author then goes on to erroneously extend that the general rule of thumb is that the plasma stability is related to the curvature...
by icarus
Fri Jul 18, 2008 12:17 pm
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

Well finally got back to this and put the math into Indrek's code to locate the image system correctly so that the wiffle ball surface is perfectly spherical (the ideal case). Have run it at spherical wiffle ball radii of 0.2m, 0.15m, 0.1m and 0.05m. If the interior were a superconducting, superflui...
by icarus
Wed Jul 16, 2008 12:57 am
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

First cut of the solution, with Indrek's help.

http://www.mare.ee/indrek/ephi/tmp/test25.jpg

Image
by icarus
Mon Jul 14, 2008 6:48 am
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

Is the spherical surface just a mathematical construct to help solve the equations? Or are you saying that the magnetic field itself is perfectly spherical where it contacts the plasma? Does that imply that the field is concave toward the plasma? If so then we have a stability problem. tombo: the w...
by icarus
Mon Jul 14, 2008 5:33 am
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

Here's some replies: tonybarry: I don't have a dataset generated but rather functional equations for the magneto-static field interior to the Magrid, I'll see if Blender will help. torulf2: if I get something together I'll take you up on offer to generate animations, zooming in on the streamlines ar...
by icarus
Sun Jul 13, 2008 10:31 am
Forum: Theory
Topic: Possible wiffle-ball analytical solution
Replies: 88
Views: 37674

Possible wiffle-ball analytical solution

Hi all, I think I have an analytical solution for the field of the domain interior to the so-called "wiffle-ball" quasi-spherical boundary, that forms within the Polywell reactor. It demonstrates why the cusps losses of ions will become very small and ion/electron mixing also becomes very ...

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