<div dir="ltr"><div><br></div>Hi Isabella,<br><br>FLASH uses CGS.<br>Pressure ~ dynes/cm^2, Energy ~ ergs<br>However in the Sedov problem, regarding the normalization, I think the ExpEnergy is actually an energy density/pressure provided by the shock. I'm not completely sure You'll want to check if energy is conserved when visualizing and what is given in the .dat file for the total energy (for reflecting BC). From doing that you'll be able to determine the factor (if it's mass or volume).<br><br>You can also tell what units are being used by opening the (e.g. sedov).log file for the problem you've run and search for "unit":<div><br></div><div>You'll probably find:<ul><li>a list of the known units of measurement</li><li>along with physical constants used</li><li>you can also check while searching in the file and verify: <span></span>
<p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-weight:normal;font-stretch:normal;font-size:14px;line-height:normal;font-family:"Andale Mono";color:rgb(40,254,20);background-color:rgba(0,0,0,0.9)"><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">pc_</span><span class="gmail-s2" style="font-variant-ligatures:no-common-ligatures;color:rgb(175,215,255);background-color:rgb(179,0,179)">units</span><span class="gmail-s1" style="font-variant-ligatures:no-common-ligatures">base<span class="gmail-Apple-converted-space"> </span>= CGS</span></p>
</li></ul>Hope this is helpful,<br>Marissa</div><div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><font face="monospace, monospace" size="1" color="#000000">--- <br></font><div style="font-size:12.8px"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font size="1" face="monospace, monospace" color="#000000">Marissa Adams</font></div><div><font size="1" face="monospace, monospace" color="#000000">PhD Student</font></div><div dir="ltr"><font face="monospace, monospace" size="1" color="#000000">Website: <a href="http://www.pas.rochester.edu/~madams/" target="_blank">http://www.pas.rochester.edu/~madams</a></font></div><div><font face="monospace, monospace" size="1" color="#000000">University of Rochester</font></div><div dir="ltr"><font size="1" face="monospace, monospace" color="#000000">Department of Physics & Astronomy</font></div><div dir="ltr"><font size="1" face="monospace, monospace"><font color="#000000">371 Bausch & Lomb Hall</font></font></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jun 19, 2018 at 8:15 PM Isabella M Pagano <<a href="mailto:ipagano@utexas.edu">ipagano@utexas.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello, <div><br><div>I've looked over the user manual several times and it doesn't specify what units of measurement the different parameters are in. I've just been running the Sedov equation sample problem, and was wondering what it was normalized to/what units because it isn't actually explicitly mentioned. I can deduce that the pressure is in bar because the unit given is 10^-5 which is equal to one pascal, so I'm assuming that it is in bars. However, the default density/energy are 1, so what is that supposed to be normalized to? Is there a convention I'm not aware of in this instance?</div><div><br></div><div>Thanks! </div><div>Bella</div><div><br></div></div></div>
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