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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hello,
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">In my view you should not increase the number of allowed warnings – your model gives irrelevant results, you should not
rely on the results.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">In the setting menu, I would first try the following (I use the 1<sup>st</sup> 2 suggestions for all simulations) :<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Decrease the minimum relaxation factor (setting #1) – let’s say to 0.01
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Increase the « number of Iterations Before Warning » (setting #10) – sometimes I use up to 1000+ iterations<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Optimize the order of components in the subsequent tab.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Best wishes,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Charles<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#005A74">Charles MARAGNA<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D">Energy Modelling Engineer</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#005A74">Georesources Division – Geothermal energy and energy storage Unit<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D">3 av. Claude-Guillemin - BP 36009 - 45060 ORLÉANS Cedex 2 - France<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#1F497D">Tél : +33 (0)2 38 64 37 51 /
</span><u><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:blue"><a href="mailto:c.maragna@brgm.fr"><span style="color:#0563C1">c.maragna@brgm.fr</span></a><o:p></o:p></span></u></p>
<p class="MsoNormal"><b><span style="font-size:7.0pt;font-family:"Arial",sans-serif;color:#9E4F16">BRGM – FRENCH GEOLOGICAL SURVEY</span></b><b><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#9E4F16"> /
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.0pt;font-family:"Arial",sans-serif;color:black"><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:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">De :</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Julien Gambade <julien.gambade@univ-ubs.fr>
<br>
<b>Envoyé :</b> lundi 5 décembre 2022 14:24<br>
<b>À :</b> trnsys-users@lists.onebuilding.org<br>
<b>Objet :</b> [TRNSYS-users] Convergence problems<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Dear Trnsys users,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">I have some problem with convergence issues. I am working with a simulation with a duration of several months and a timestep of 5 min.
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">For several time steps, some inputs do not converge and after a certain time, the amount of warnings exceeds the number of warnings before error.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Two options allowed me to end the simulation : increase the number of warnings allowed and use Type "delayed inputs" (last option results in a change in my outputs).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Do you think the first solution is fine or should I go to the second solution ? Or, does anyone know an other solution I could try ?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Best regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">-- <o:p>
</o:p></span></p>
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<p class="MsoNormal"><strong><span style="font-family:"Arial",sans-serif;color:black">Julien GAMBADE</span></strong><span style="font-family:"Arial",sans-serif;color:black"><br>
<strong><span style="font-family:"Arial",sans-serif">Doctorant</span></strong><br>
Institut de Recherche Dupuy de Lôme (UMR CNRS 6027)<br>
Centre de recherche Christian Huygens<br>
Rue de Saint-Maudé - 56100 Lorient - France<br>
<a href="mailto:julien.gambade@univ-ubs.fr">julien.gambade@univ-ubs.fr</a><br>
<a href="https://urldefense.com/v3/__http:/www.irdl.fr__;!!KbSiYrE!nmNdeOhAR67FHZ3X9_DM_kBWZnFmRYIKKCzPBgjuqyQ5KcBgbN_KhA2wgPOT55oLvd5NJpR4f8uYVYMbLC9SGo8ypNmJOzwCxd2FhQ$" target="_blank">www.irdl.fr</a><o:p></o:p></span></p>
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