## Search found 819 matches

- Tue Jul 22, 2008 7:37 pm
- Forum: Theory
- Topic: Where's the beef?
- Replies:
**132** - Views:
**38705**

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...

- Fri Jul 18, 2008 9:34 pm
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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...

- Fri Jul 18, 2008 8:47 pm
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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 ...

- Fri Jul 18, 2008 8:27 pm
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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...

- Fri Jul 18, 2008 12:17 pm
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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...

- Wed Jul 16, 2008 12:57 am
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

- Mon Jul 14, 2008 6:48 am
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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...

- Mon Jul 14, 2008 5:33 am
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

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...

- Sun Jul 13, 2008 10:31 am
- Forum: Theory
- Topic: Possible wiffle-ball analytical solution
- Replies:
**88** - Views:
**38694**

### 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 small when...