<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Marissa, <div class="">Hopefully what we’re planning won’t be too sophisticated (or heavy).</div><div class="">For now our interest is simply a coaxial-plasma gun. </div><div class=""><br class=""></div><div class="">As you know the DPF and ZP are distinguished by their directions of</div><div class="">current and mass flow, and their boundary conditions. So, if there </div><div class="">was something you might share for the ZP that illustrates how to </div><div class="">implement a current discharge, that would be a great help to us. </div><div class=""><div><br class=""></div><div><div class="">Thank you. </div><div class="">fw</div><div class=""><br class=""></div><div class=""><br class=""></div><blockquote type="cite" class=""><div class="">On Jul 7, 2021, at 2:41 PM, Marissa B. P. Adams <<a href="mailto:madams@pas.rochester.edu" class="">madams@pas.rochester.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div dir="ltr" class="">Dear Frank,<div class=""><br class=""></div><div class="">Are you aiming to simulate dense plasma focus or some sort of arching experiment? AFAIK this has not been done. </div><div class=""><br class=""></div><div class=""><div class=""><div class="">On a related note: I've been implementing the Z-pinch capabilities within FLASH for some time now (amongst other projects -- it is currently on the backburner, sorry ya'll, I gotta graduate). It is a difficult problem with a surprisingly large amount of layers of complexity (solving this problem from the Eulerian perspective, as is done in FLASH). </div></div><div class=""></div></div><div class=""><br class=""></div><div class="">In my opinion it would require some extreme heavy lifting: experience developing, using, and interpreting results from FLASH to implement a DPF module if it would be at all comparable to the work I've been doing (as arguably you can consider DPF a Z-pinch, but numerically, I am unsure of how other codes do DPF). I'd advise finding a different code to use to do DPF for now, although I think DPF is on a to-do list somewhere on the powers-that-be's desk :)</div><div class=""><br class=""></div><div class="">Best,</div><div class="">Marissa</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 7, 2021 at 5:11 PM frank wessel <<a href="mailto:fwessel@gmail.com" class="">fwessel@gmail.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Greetings FLASH users,<br class="">
Does anyone know whether FLASH has been used to simulate a <br class="">
pulsed electrical discharge between coaxial electrodes?<br class="">
<br class="">
If so, can someone provide pointers to a simulation/module that implements this? <br class="">
<br class="">
If not, can someone recommend something that can be modified as a starting point? <br class="">
<br class="">
Knowing whether this has been done before will be a great help. <br class="">
<br class="">
Thank You,<br class="">
fw</blockquote></div>
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