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<p class="MsoNormal"><span style="font-size:11.0pt">Yes, FLASH’s default units are a scaled CGS system, so velocities in cm/s, pressure in barye, etc.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The code already does the proper unit conversion for SESAME tables, so there’s no need to convert table values prior to using it; just use the table as-is from the sesame library.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">If you’re using the implicit resistivity solver, then ohmic heating will be stored in a variable named ‘qohm’ if add this line to your simulation’s Config file:<br>
VARIABLE qohm<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">If you’re solving resistivity explicitly, then you’d still have to add that line to Config, but then also add lines of code to store it. It’s calculated in hy_uhd_getFaceFlux.F90, but it’s just not stored
in the UNK array.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">--</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Eddie Hansen</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Applications Group Leader<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#181A1B">Flash Center for Computational Science</span><span style="font-family:"Calibri",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">flash-users <flash-users-bounces@flash.rochester.edu> on behalf of lizy <3287940670@qq.com><br>
<b>Date: </b>Wednesday, July 30, 2025 at 12:05 AM<br>
<b>To: </b>flash-users <flash-users@flash.rochester.edu><br>
<b>Subject: </b>[FLASH-USERS] 1. Unit system issues 2. Output new quantities in the checkpoint file<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Dear Flash developers,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">1. Except electromagnetic quantities such as magnetic fields and currents, are all other data output by flash, such as pressure and velocity, using Gaussian units?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">2. If that's the case, I imported the SESAME equation of state table. Is it true that the units for temperature, density, and pressure should also use Gaussian units?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">3. Joule heating Q is not in the output file of the checkpoint file. Where should I declare this quantity and make it output?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Thank you very much for your response amidst your busy schedule.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Best wishes!<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">Lizy<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt">7/30 2025<o:p></o:p></span></p>
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