{"id":346787,"date":"2024-01-26T14:42:21","date_gmt":"2024-01-26T14:42:21","guid":{"rendered":"\/forum\/forums\/topic\/heat-source-in-2d-solid\/"},"modified":"2024-01-26T14:42:21","modified_gmt":"2024-01-26T14:42:21","slug":"heat-source-in-2d-solid","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/heat-source-in-2d-solid\/","title":{"rendered":"Heat source in 2d solid"},"content":{"rendered":"<p>Hello everyone,<\/p>\n<p>I was having trouble in defining a heat source for an electric heater. I&#8217;ve isolated my heater completly from the rest the domain to understand it bettter.<\/p>\n<p>It&#8217;s 2D transient conduction problem + heat source term in a rectangle. All the walls are adiabatic. The heat source is 500W, and the volume of the domain is 0.0002 m3, so I&#8217;ve defined the volumetric heat source to be 2500000 W\/m3.<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706279870-domain_scheme.jpg\" alt=\"\"><\/p>\n<p>I would have expected the average temperature evolution would follow this equation:<br \/><a><img decoding=\"async\" title=\"\\rho\" src=\"https:\/\/www.cfd-online.com\/Forums\/vbLatex\/img\/d2606be4e0cd2c9a6179c8f2e3547a85-1.gif\" alt=\"\\rho\"><\/a>*Cp*Volume*dT\/dt = Qin<\/p>\n<p>However, the average temperature evolution is extremely slow and doesn&#8217;t follow the previous equation. It only follows that eq. if I force the thermal conductivity of the material to be close to zero.<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/01\/26-01-2024-1706279945-temperature_evolution_comparison.jpg\" alt=\"\"><\/p>\n<p>Why would the average temperature evolution be sensible to thermal conductivity if the heat source is the same and has adiabatic boundaries?<\/p>\n<p>Any help is fully appreciated.<\/p>\n","protected":false},"template":"","class_list":["post-346787","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["337671","8124"],"_bbp_author_ip":["96.7.218.223"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["652"],"_bbp_topic_status":["unanswered"],"_bbp_likes_count":["0"],"_bbp_topic_id":["346787"],"_bbp_forum_id":["27792"],"_bbp_engagement":["8124","337671"],"_bbp_voice_count":["2"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["350037"],"_bbp_last_active_id":["350037"],"_bbp_last_active_time":["2024-02-09 09:42:12"]},"test":"j-m-amigoalvarez-1student-tudelft-nl"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/346787","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\/346787\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=346787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}