<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hi Again,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Just to let you know, I changed my resolution from 3.2 (cell size) to 1.6 and the problem went away. I will now run the full simulation and see if I can match that paper's Figure 18.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Thanks, Tony...<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="signature">
<div style="font-family:Tahoma; font-size:13px"><img style="max-width:100%; height:auto; font-family:Calibri; font-size:15px" src="https://email.osu.edu/owa/attachment.ashx?id=RgAAAAAb%2fHy0wVvTSoHQx8OJXAaLBwCiA5IZrwRKTqiLVNbt4xWyAAAAAAFUAADltPc25wRDT4tJbW9en2wXAHKArVn%2fAAAJ&attcnt=1&attid0=EAD8Cse5Lj5uQ6ZJWk98Q%2blj"><br style="font-family:Calibri; font-size:15px">
<font size="2" face="Helvetica" color="#BB0000"><span style="font-size:9pt"><b>Anthony Shoup</b></span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> PhD, Senior Lecturer<br>
</span></font><font size="2" face="Helvetica" color="#BB0000"><span style="font-size:9pt">College of Arts & Sciences, College of Engineering</span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> Departments of Physics, Astronomy,
EEIC<br>
</span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt">315 Science Bldg. | 4250 Campus Dr. Lima, OH 45807<br>
419-995-8018 Office | 419-516-2257 Mobile<br>
</span></font><a href="https://email.osu.edu/owa/redir.aspx?C=j5WpnJiBk0W5oVlCbtvB-xiCkA_lbdEIi9hlk7ByHiG7ARrxjwDFmAW8S_XespJbMLJRblY5JKc.&URL=mailto%3ashoup.31%40osu.edu" target="_blank" style="font-family:Calibri; font-size:15px"><font size="2" face="Helvetica" color="blue"><span style="font-size:9pt"><b><u>shoup.31@osu.edu</u></b></span></font></a><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> </span></font><a href="https://email.osu.edu/owa/redir.aspx?C=j5WpnJiBk0W5oVlCbtvB-xiCkA_lbdEIi9hlk7ByHiG7ARrxjwDFmAW8S_XespJbMLJRblY5JKc.&URL=http%3a%2f%2fosu.edu" target="_blank" style="font-family:Calibri; font-size:15px"><font size="2" face="Helvetica" color="blue"><span style="font-size:9pt"><b><u>osu.edu</u></b></span></font></a></div>
</div>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> users-bounces@einsteintoolkit.org <users-bounces@einsteintoolkit.org> on behalf of Shoup, Anthony <shoup.31@osu.edu><br>
<b>Sent:</b> Friday, March 15, 2019 10:01 PM<br>
<b>To:</b> Einstein Toolkit Users<br>
<b>Subject:</b> [Users] Conservative to primative conversion fails in TOV collapse</font>
<div> </div>
</div>
<style type="text/css" style="display:none">
<!--
p
{margin-top:0;
margin-bottom:0}
-->
</style>
<div dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Hi All,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I have been working on reproducing the results in the paper:</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span>The Einstein Toolkit: A Community Computational<br>
</span><span>Infrastructure for Relativistic Astrophysics</span> (arXiv: 1111.3344v1 {gr-qc] 14 Nov 2011)</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
and others as a way to teach myself how to use the Einstein Toolkit and to test out my home-built cluster computer.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I am currently working on the non-rotating TOV neutron star collapse into a BH. It works well up until it fails trying to convert conserved variables into primitive variables in grhydro (see attached tovCollapse.out file). I have tried adjusting the atmosphere
parameters (specifically <span>GRHydro::rho_abs_min = 1.e-8, up from 1.e-10).</span>, as per the suggestions in the grhydro documentation, which has helped, but I think the conversion is failing now very near where the AH will/is forming.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I have included my parameter file for the simulation (I lowered evolve K from 98 to 80 just to accelerate the collapse process).</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Any help anyone can give would be greatly appreciated.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Sincerely, Tony...<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div id="x_signature">
<div style="font-family:Tahoma; font-size:13px"><img style="max-width:100%; height:auto; font-family:Calibri; font-size:15px" src="https://email.osu.edu/owa/attachment.ashx?id=RgAAAAAb%2fHy0wVvTSoHQx8OJXAaLBwCiA5IZrwRKTqiLVNbt4xWyAAAAAAFUAADltPc25wRDT4tJbW9en2wXAHKArVn%2fAAAJ&attcnt=1&attid0=EAD8Cse5Lj5uQ6ZJWk98Q%2blj"><br style="font-family:Calibri; font-size:15px">
<font size="2" face="Helvetica" color="#BB0000"><span style="font-size:9pt"><b>Anthony Shoup</b></span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> PhD, Senior Lecturer<br>
</span></font><font size="2" face="Helvetica" color="#BB0000"><span style="font-size:9pt">College of Arts & Sciences, College of Engineering</span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> Departments of Physics, Astronomy,
EEIC<br>
</span></font><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt">315 Science Bldg. | 4250 Campus Dr. Lima, OH 45807<br>
419-995-8018 Office | 419-516-2257 Mobile<br>
</span></font><a href="https://email.osu.edu/owa/redir.aspx?C=j5WpnJiBk0W5oVlCbtvB-xiCkA_lbdEIi9hlk7ByHiG7ARrxjwDFmAW8S_XespJbMLJRblY5JKc.&URL=mailto%3ashoup.31%40osu.edu" target="_blank" style="font-family:Calibri; font-size:15px"><font size="2" face="Helvetica" color="blue"><span style="font-size:9pt"><b><u>shoup.31@osu.edu</u></b></span></font></a><font size="2" face="Helvetica" color="#333333"><span style="font-size:9pt"> </span></font><a href="https://email.osu.edu/owa/redir.aspx?C=j5WpnJiBk0W5oVlCbtvB-xiCkA_lbdEIi9hlk7ByHiG7ARrxjwDFmAW8S_XespJbMLJRblY5JKc.&URL=http%3a%2f%2fosu.edu" target="_blank" style="font-family:Calibri; font-size:15px"><font size="2" face="Helvetica" color="blue"><span style="font-size:9pt"><b><u>osu.edu</u></b></span></font></a></div>
</div>
</div>
</body>
</html>