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  <title>COMSOL Forums: COMSOL compatibility version 4.0 vs. 4.3 </title>
  <link>http://www.comsol.com/community/forums/general/thread/35498/</link>
  <description>Most recent forum messages</description>
  <pubDate>Fri, 15 Mar 2013 01:57:49 +0000</pubDate>
  <image>
   <title>COMSOL Forums: COMSOL compatibility version 4.0 vs. 4.3 </title>
   <url>http://www.comsol.com/shared/images/logos/comsol_logo.gif</url>
   <link>http://www.comsol.com/community/forums/general/thread/35498/</link>
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   <title>Re: COMSOL compatibility version 4.0 vs. 4.3 </title>
   <link>http://www.comsol.com/community/forums/general/thread/35498/#p98103</link>
   <description>Hi&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
I never rerun older version, but I build them up fresh in the new version. Furtherore I rather trust the later versions, until proven the contrary ;)&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
For me this is particularly the case for a &amp;quot;0&amp;quot; subrelease as these tend to be not that stable or have some typos in them this is ageneral rule I apply to all my software in use&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
--&lt;br /&gt;&#13;
Good luck&lt;br /&gt;&#13;
Ivar</description>
   <pubDate>Fri, 15 Mar 2013 01:57:49 +0000</pubDate>
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   <title>COMSOL compatibility version 4.0 vs. 4.3 </title>
   <link>http://www.comsol.com/community/forums/general/thread/35498/#p98086</link>
   <description>Hello,&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
I have been using COMSOL 4.0 until recently (I know it's pretty old but I had no complaint with 4.0) for a microfluidic fuel cell application.&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
Two weeks ago, the license finally expired and I had to install a new 4.3 in my computer. So I ran an old case that was originally created by 4.0 version to see if there is any issues. The convergence was fine and it looked totally OK until I investigated the results: the currents produced were far off from what I typically got using 4.0. I double checked everything in my setup and could not find anything wrong. Basically, I didn't change any settings/parameters but simply ran the old case files in the new version. Here is a list of modules used in my model:&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
-. Secondary Current Distribution&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
-. Free and Porous Media Flow&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
-. Transport of Diluted Species&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
Has anyone experienced this weird behavior between different versions of COMSOL? Does anyone know how to resolve this issue?&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
Your comments will be greatly appreciated.&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
thanks in advance,&lt;br /&gt;&#13;
&lt;br /&gt;&#13;
 &lt;br /&gt;&#13;
Jin&lt;br /&gt;&#13;
</description>
   <pubDate>Thu, 14 Mar 2013 21:54:13 +0000</pubDate>
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