{"id":30506,"date":"2018-09-20T12:12:15","date_gmt":"2018-09-20T12:12:15","guid":{"rendered":"\/forum\/forums\/topic\/warnings-in-real-gas-simulation\/"},"modified":"2018-09-20T12:12:15","modified_gmt":"2018-09-20T12:12:15","slug":"warnings-in-real-gas-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/warnings-in-real-gas-simulation\/","title":{"rendered":"Warnings in Real Gas Simulation"},"content":{"rendered":"<p>Hello everyone!<\/p>\n<p><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\">I&rsquo;m simulating the flow of CO2 condensation. I use the Non-equilibrium Phase Change with CO2 liquid and gas defined in RGP file. The first time I didn&rsquo;t select the nucleation model. The solver always alert that some variables went out of bounds like this:<\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\"><span lang=\"EN-US\"><img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/fee83848-21cc-40bd-91ac-a941009738f9\/d8584852-1a6c-47e2-a657-a96100c7fc4b_problem.jpg?width=690&amp;upscale=false\" alt=\"warnings\"><\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">It puzzled me when I examed it in details. <\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">For example, the second variable CO2l.Density(liquid CO2 Density) is listed becasuse the CO2l.Static Temperature(Max value 347.69K) is upper than tabluated.&nbsp; But actually in the <strong>Liquid CO2 RGP table<\/strong>, temperature range is up to 450K. And in my opinion, when the temperature is 347.69K, the solver should read properties from <strong>Gas table<\/strong> rather than Liquid table.<\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\">&nbsp;<\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">The same questions occurs to other variables like CO2g.Saturation Temperature.It is Absolute Pressure as large as 16.98MPa that result in the error. But when the pressure is up to 16.98MPa, it is far away from the critical pressure(7.3MPa), which means that it is in supercritical region and there shouldn&rsquo;t be any saturation data, let alone CO2g.Saturation Temperature.<\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">Is there any reasonable explanation?<\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\">&nbsp;<\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">Best regards<\/span><\/p>\n<p><\/p>\n<p class=\"MsoNormal\" align=\"left\"><span lang=\"EN-US\">Stoki<\/span><\/p>\n","protected":false},"template":"","class_list":["post-30506","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["2677"],"_bbp_old_topic_author_name_id":["Anonymous"],"_bbp_old_is_topic_anonymous_id":["false"],"_bbp_old_closed_status_id":["publish"],"_bbp_author_ip":[null],"_bbp_old_sticky_status_id":["normal"],"_bbp_likes_count":["0","0","0","0","0"],"_btv_view_count":["1335"],"_bbp_subscription":["236895"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["30506"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","158401","158441"],"_bbp_voice_count":["3"],"_bbp_reply_count":["14"],"_bbp_last_reply_id":["67015"],"_bbp_last_active_id":["67015"],"_bbp_last_active_time":["2018-10-19 09:58:32"]},"test":"stoki"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/30506","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\/30506\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=30506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}