<div dir="ltr">Hi Eddie, since you mentioned active development, do you know if there's any status update for FLASH 5.0? Or plans for FLASH 4.X to upgrade from PARAMESH/Chombo to AMReX or other grids that can scale to leverage new/upcoming exaflop machines?<div><br></div><div>Best,<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr">--------<div>Ryan</div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 28, 2023 at 3:52 PM Hansen, Eddie <<a href="mailto:ehansen@pas.rochester.edu">ehansen@pas.rochester.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg1154897925451429950">
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<p class="MsoNormal"><span style="font-size:11pt">Hi Zhang,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt">The ZPinch example problem is not specific to any experiment, so a general Z-pinch only requires an azimuthal field. That being said, FLASH 4.7 does indeed support the implicit diffusion of an axial field
but only for uniform grid setups (+ug). We are actively working on implementing AMR support for future releases.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black">--</span><span style="color:black"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(24,26,27)">Eddie Hansen</span><span style="color:black"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(24,26,27)">Research Scientist</span><span style="color:black"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(24,26,27)">Flash Center for Computational Science</span><span style="color:black"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12pt"><b><span style="font-size:12pt;color:black">From:
</span></b><span style="font-size:12pt;color:black">flash-users <<a href="mailto:flash-users-bounces@flash.rochester.edu" target="_blank">flash-users-bounces@flash.rochester.edu</a>> on behalf of Zhang Daoyuan <<a href="mailto:zdy0903@stu.xjtu.edu.cn" target="_blank">zdy0903@stu.xjtu.edu.cn</a>><br>
<b>Date: </b>Tuesday, February 28, 2023 at 9:08 AM<br>
<b>To: </b><a href="mailto:flash-users@flash.rochester.edu" target="_blank">flash-users@flash.rochester.edu</a> <<a href="mailto:flash-users@flash.rochester.edu" target="_blank">flash-users@flash.rochester.edu</a>><br>
<b>Subject: </b>[FLASH-USERS] Is the implicit magnetic diffusion solver can be used for axial magnetic field in FLASH4.7<u></u><u></u></span></p>
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<pre><span style="font-size:10.5pt;font-family:SimSun">Dear Flash Developers,<u></u><u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun"><u></u> <u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun">Thank you for the release of FLASH4.7. I want to ask if the newly added implicit magnetic diffusion solver can be used for axial magnetic field in R-Z 2D simulation. When I look at the "Zpinch" simulation example, I find that the axial magnetic field is not initialized. This is weird because I believe the "Zpinch" case is actually an example of MagLIF experiment. It should have axial magnetic field.<u></u><u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun">Can we use the axial magnetic field in Zpinch simulation? Thank you very much! <u></u><u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun"><u></u> <u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun">Yours<u></u><u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun">Zhang<u></u><u></u></span></pre>
<pre><span style="font-size:10.5pt;font-family:SimSun"><u></u> <u></u></span></pre>
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