{"id":161792,"date":"2023-01-25T07:16:57","date_gmt":"2023-01-25T07:16:57","guid":{"rendered":"\/knowledge\/forums\/topic\/why-do-i-frequently-get-energy-imbalance-when-i-use-shell-conduction-even-if-my-calculation-looks-well-converged-stable-monitors-and-low-residuals\/"},"modified":"2023-07-31T12:35:54","modified_gmt":"2023-07-31T12:35:54","slug":"why-do-i-frequently-get-energy-imbalance-when-i-use-shell-conduction-even-if-my-calculation-looks-well-converged-stable-monitors-and-low-residuals","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/why-do-i-frequently-get-energy-imbalance-when-i-use-shell-conduction-even-if-my-calculation-looks-well-converged-stable-monitors-and-low-residuals\/","title":{"rendered":"Why do I frequently get energy imbalance when I use shell conduction, even if my calculation looks well converged (stable monitors and low residuals)?"},"content":{"rendered":"<p>Heat flux at the sides of the shell walls are not taken into account inside the heat flux reports in Fluent (> Report > Fluxes > Total Heat Transfer rate).  This means that at these locations, heat flux is accounted for correctly in Fluent, but cannot be post-processed. If the heat flux crossing the side faces is significant, this could lead to an imbalance in the reports between the wall and wall-shadow (more than 30% imbalance reported in some cases).  To make sure this imbalance is not due to convergence difficulties, a good practice is performing a quick sensitivity analysis by reducing either the shell conduction thickness or the conductivity of the solid material, and then checking changes in the heat flux report accordingly.<\/p>\n","protected":false},"template":"","class_list":["post-161792","topic","type-topic","status-publish","hentry","topic-tag-4424","topic-tag-conjugate-heat-transfer","topic-tag-fluent","topic-tag-fluid-dynamics","topic-tag-heat-transfer-and-radiation"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_wp_page_template":["default"],"_bbp_forum_id":["27791"],"_bbp_author_ip":["23.56.168.180"],"_bbp_last_active_time":["1-24-2023  20:20:28"],"_btv_view_count":["938"],"siebel_km_number":["2037911"],"product_version":["16"],"km_published_date":["2014-11-12T13:37:02.000Z"],"family":["Fluid Dynamics"],"application_name":["FLUENT"]},"test":"articlesansys-com"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/topics\/161792\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/knowledge\/wp-json\/wp\/v2\/media?parent=161792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}