{"id":249770,"date":"2023-02-14T12:11:50","date_gmt":"2023-02-14T12:11:50","guid":{"rendered":"\/forum\/forums\/topic\/natural-convection-heat-transfer-using-incompressible-ideal-gas-or-ideal-gas\/"},"modified":"2023-02-14T12:11:50","modified_gmt":"2023-02-14T12:11:50","slug":"natural-convection-heat-transfer-using-incompressible-ideal-gas-or-ideal-gas","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/natural-convection-heat-transfer-using-incompressible-ideal-gas-or-ideal-gas\/","title":{"rendered":"NATURAL CONVECTION HEAT TRANSFER USING INCOMPRESSIBLE IDEAL GAS OR IDEAL GAS."},"content":{"rendered":"<p>Hi, I am trying to model natural convection in an external domain around a 2D cylinder. all my boundary conditions are pressure outlets with gauge pressure set to 0. My cylinder wall temp is 350k and ambient air temp is 294k.<\/p>\n<p>With bousinessq, i am getting accurate flow patterns and heat transfer coefficients. However, when i change the density model to incompressible ideal gas or ideal gas (and i am setting all the parameters and operating conditions correctly), the flow is occuring downwards (with gravity) instead of against gravity.<\/p>\n<p>This seems to be a major problem with no solution anywhere. Any help would be appreciated<\/p>\n","protected":false},"template":"","class_list":["post-249770","topic","type-topic","status-closed","hentry","topic-tag-heatfluxfluentnaturalconvectionexternalflowansys-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["274507","18096","199"],"_bbp_author_ip":["23.223.149.206"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_bbp_likes_count":["1"],"_btv_view_count":["1780"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["249770"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","18096","274507"],"_bbp_voice_count":["3"],"_bbp_reply_count":["15"],"_bbp_last_reply_id":["249993"],"_bbp_last_active_id":["249993"],"_bbp_last_active_time":["2023-02-15 11:18:20"]},"test":"mohammed-aliawe-co-uk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/249770","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\/249770\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=249770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}