{"id":160691,"date":"2021-07-26T08:18:07","date_gmt":"2021-07-26T08:18:07","guid":{"rendered":"\/forum\/forums\/topic\/error-with-isat\/"},"modified":"2021-07-26T14:45:21","modified_gmt":"2021-07-26T14:45:21","slug":"error-with-isat","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-with-isat\/","title":{"rendered":"Error with ISAT"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello everybody,<\/p>\n<p>I use ISAT tables for a chemistry-only simulation within a flow field in Fluent (Stiff Chemistry Solver, Finite Rate, and DPM is used).<\/p>\n<p>After around 400 regular Iterations an error occurs:<\/p>\n<p>______________________________________________________________<\/p>\n<p>********** ISAT_ABORT **************<\/p>\n<p>routine = isat_leaf_init<\/p>\n<p>location = 1<\/p>\n<p>message = svd failed, INFO= 29<\/p>\n<p>****** END ISAT_ABORT **************<\/p>\n<p>ell_radii: info, n, lwork, work(1) = 29 30 9600<\/p>\n<p>1050.00000000000<\/p>\n<p>sv =<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p>NaN NaN NaN NaN NaN<\/p>\n<p> The fl process could not be started.<\/p>\n<p>________________________________________________________________<\/p>\n<p>Does somebody understand what happend? Simulation was on the way to convergence. One species has a very rapidly, artificially high, unrealistic, one way kinetic ( &quot;direct&quot; combustion of ethanol to CO2 and H2O by only one equation and exzessive kinetic parameters). All other reactions (some potassium chemistry) have realistic parameters and are stable without the combustion of ethanol. Everything works great until the error occurs. <\/p>\n<p>Additionally, I want to save the interim result but the program is not completely controllable after the error. Saving case, data, isat table and creating contour plot does not work. Is there something I can do? The interim results are satisfying to run further simulation from. Other program features like the adjusting of the setup is still possible. <\/p>\n<p><\/p>\n<\/p>\n<p>Thank you very much!<\/p>\n","protected":false},"template":"","class_list":["post-160691","topic","type-topic","status-closed","hentry","topic-tag-ansys-fluent","topic-tag-chemistry","topic-tag-chemkin","topic-tag-error","topic-tag-isat-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["1135"],"_bbp_likes_count":["0"],"_bbp_subscription":["254334"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["160691"],"_bbp_forum_id":["27792"],"_bbp_engagement":["118","210415"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["186695"],"_bbp_last_active_id":["186695"],"_bbp_last_active_time":["2021-07-26 14:45:21"]},"test":"daniel-eckatgooglemail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160691\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=160691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}