{"id":382810,"date":"2024-09-16T17:20:16","date_gmt":"2024-09-16T17:20:16","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/382810\/"},"modified":"2024-09-16T17:20:16","modified_gmt":"2024-09-16T17:20:16","slug":"382810","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/382810\/","title":{"rendered":"Reply To: chemkin"},"content":{"rendered":"<p>&lt;p&gt;Hi:&nbsp;&lt;\/p&gt;&lt;p&gt;This error most often refers to the thermo file entry for the species that is mentioned.&lt;\/p&gt;&lt;p&gt;Thermo files have a very strict format, and the letters and numbers that follow the species name on the first line have to be in specific places for the species elements to register.&nbsp; The elemental description is shown below in bold:&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;H2O L 8\/89<strong>H 2O 1 00 00G<\/strong> 200.000 3500.000 1000.000 1&lt;br&gt;3.03399249E+00 2.17691804E-03-1.64072518E-07-9.70419870E-11 1.68200992E-14 2&lt;br&gt;-3.00042971E+04 4.96677010E+00 4.19864056E+00-2.03643410E-03 6.52040211E-06 3&lt;br&gt;-5.48797062E-09 1.77197817E-12-3.02937267E+04-8.49032208E-01 9.90409200E+03 4&lt;\/p&gt;&lt;p&gt;If these elements are incorrect, or incorrectly-placed, the specie could read as having 0 elements, and then you will get the error. Please check your thermo file entry for the species against the species composition and phase&nbsp; (gas or liquid).&nbsp; Compare the placement with that shown in the Chemkin Input manual format guidelines here:&lt;\/p&gt;&lt;p&gt;https:\/\/ansyshelp.ansys.com\/account\/secured?returnurl=\/Views\/Secured\/corp\/v242\/en\/chemkin_in\/ckin_therm_sec_defaut.html&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/16-09-2024-1726507005-mceclip0.png\" \/>&lt;\/p&gt;&lt;p&gt;<img decoding=\"async\" src=\"https:\/\/innovationspace.ansys.com\/forum\/wp-content\/uploads\/sites\/2\/2024\/09\/16-09-2024-1726507066-mceclip1.png\" \/>&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;I hope this helps.&lt;\/p&gt;&lt;p&gt;&nbsp;&lt;\/p&gt;&lt;p&gt;Best Regards,&lt;\/p&gt;&lt;p&gt;Judy&lt;\/p&gt;<\/p>\n","protected":false},"template":"","class_list":["post-382810","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/382810","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/reply"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/replies\/382810\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=382810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}