The Focus Fusion Society Forums Dense Plasma Focus (DPF) Science and Applications Why a 0D plasmoid simulation is enough to model a real plamoid?

Viewing 4 posts - 1 through 4 (of 4 total)
  • Author
    Posts
  • #914
    MTd2
    Participant

    Section 4 of this paper:

    http://arxiv.org/ftp/arxiv/papers/0710/0710.3149.pdf

    There are a lot of assumptions made. But, why should I be convinced that those will be kept until 16GG? The highes pinch field attained was 0.4GG, thinking that non chaotic conditions wouldn’t appear is hard after an increase of 40 the actual record is hard. Did anyone calculate the reynolds number of the plasma under this condition?

    These are the conditons, by the way:

    “The simulation, by its zero-dimensional character, assumes that the plasma in the plasmoid is homogenous. In addition the simulation assumes Maxwellian distributions for the electrons, and hydrogen and boron ions. Helium ions, produced by the fusion reaction, are
    assumed to cool to a Maxwellian distribution, but the fusion alpha particles are treated separately, as described below, as they are slowed by the plasma. In accordance with observation, it is assumed that the ions are all fully ionized”.

    this and the next long paragraph

    #8014
    Brian H
    Participant

    I believe subsequent simulations in 1D and preparations for 2D have been done, confirming much of this, and of course the many actual “shots” performed on the experimental FoFu have provided check points. As Aaron has mentioned elsewhere, some expectations were exceeded, others were not met, but with a net outcome very promising and supportive of the main thrust of the projections.

    But you’d have to get specifics from LPP.

    #8015
    MTd2
    Participant

    Where are these other simulations? The end of the paper mentions a mathematical method to 3D, but no concrete simulation is mentioned.

    EDIT.: Hmm. I had to update this post because you provided links to your claims. But where are the graphs of the simulations?

    But why shots made at 2 orders of magnitude lower than 10GG is enough to prove any points at this scale?

    #8043
    MTd2
    Participant

    Alright:

    http://www.physicsessays.com/doc/s2005/Lerner_Transparencies.pdf

    It is 1.3GG for boron. A mere 3.6 for the actual record. You guys should had told me that before…

Viewing 4 posts - 1 through 4 (of 4 total)
  • You must be logged in to reply to this topic.