{"id":362137,"date":"2024-04-15T06:43:57","date_gmt":"2024-04-15T06:43:57","guid":{"rendered":"\/forum\/forums\/topic\/transient-thermals-solution-problem\/"},"modified":"2024-04-15T06:43:57","modified_gmt":"2024-04-15T06:43:57","slug":"transient-thermals-solution-problem","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/transient-thermals-solution-problem\/","title":{"rendered":"transient thermal&#8217;s solution problem"},"content":{"rendered":"<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">Hello, I&#8217;m facing a problem that other users have encountered.<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">Based on previous posts, I&#8217;ve noticed that other users have encountered similar issues. I&#8217;ve read through their posts, but I still can&#8217;t seem to resolve the problem myself.<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">I checked the guidelines in Workbench. The handbook provides a formula that suggests users should use appropriate timestep sizes. However, I&#8217;m not sure about this <\/span><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">cuz<\/span><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\"> my results seem incorrect.(negative TEMP)<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\"><img decoding=\"async\" src=\"https:\/\/upload.cc\/i1\/2024\/04\/15\/iSEdJF.png\" alt=\"\"><\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\">&nbsp;<\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">timestep <\/span><span style=\"font-size: 22.0pt;font-family: \u65b0\u7d30\u660e\u9ad4;color: black\">\uff1a<\/span><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">20<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">&nbsp;<img decoding=\"async\" src=\"https:\/\/upload.cc\/i1\/2024\/04\/15\/M07LPn.png\" alt=\"\"><\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">&nbsp;<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">A five-layer rectangular prism model (8000*1600*1 um) with a mesh size of 0.4 um, where the top layer provides heat flux.<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\">&nbsp;<\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">and the initial temperature of the model is 22<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\"><img decoding=\"async\" src=\"https:\/\/upload.cc\/i1\/2024\/04\/15\/toYsAr.png\" alt=\"\">.<\/span><\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\">&nbsp;<\/p>\n<p style=\"line-height: 90%;margin-top: 10.0pt;margin-bottom: 0pt;margin-left: 0in;text-indent: 0in;text-align: left;direction: ltr\"><span style=\"font-size: 22.0pt;font-family: Calibri;color: black\">And after confirming the material properties, there are no errors in the settings. Could anyone tell me where I may have missed something in the settings that led to results contradicting physical phenomena?<\/span><\/p>\n","protected":false},"template":"","class_list":["post-362137","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["23864","58821"],"_bbp_author_ip":["23.206.193.154"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["182"],"_bbp_topic_status":["unanswered"],"_edit_lock":["1713169653:56641"],"_bbp_topic_id":["362137"],"_bbp_forum_id":["27791"],"_bbp_engagement":["23864","58821"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["362380"],"_bbp_last_active_id":["362380"],"_bbp_last_active_time":["2024-04-16 06:18:50"]},"test":"n2390ngmail-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/362137","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\/362137\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=362137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}