{"id":30521,"date":"2018-09-21T08:51:12","date_gmt":"2018-09-21T08:51:12","guid":{"rendered":"\/forum\/forums\/topic\/study-state-thermal-analysis-in-convection-media-using-fluent\/"},"modified":"2018-09-21T08:51:12","modified_gmt":"2018-09-21T08:51:12","slug":"study-state-thermal-analysis-in-convection-media-using-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/study-state-thermal-analysis-in-convection-media-using-fluent\/","title":{"rendered":"study state thermal analysis in convection media using fluent"},"content":{"rendered":"<p>Dear members,<\/p>\n<p><\/p>\n<p>I require help to setup my problem step by step.<\/p>\n<p><\/p>\n<p>Description : a electronic card is placed (conduction on mounting is neglected) in a room with air temperature 25c, and 2 components mounted on card (FPGA IC)&nbsp;&nbsp;Dissipate heat 0.5W and 0.02 W. closed room air convection heat coefficient considered 8W\/m2k.<\/p>\n<p><\/p>\n<p>I have set the respected&nbsp;material&nbsp;properties. in cell zone condition i specified fluid for room and solid for electronic package.&nbsp;<\/p>\n<p><\/p>\n<p>I am exactly facing problem with boundary condition. I have created virtually fluid domain like a room.<\/p>\n<p><\/p>\n<p>1) In boundary condition I have made all 6 walls&nbsp;<strong>Pressure Inlet. (Your suggestion are required please comment)<\/strong><\/p>\n<p><\/p>\n<p>2)My solution is keep on iterating more than 1000 iteration. still&nbsp;<strong>not showing solutions converged.&nbsp;<\/strong>can you please tell what is the reason to take more iteration.<\/p>\n<p><\/p>\n<p>3)another approach i have made all wall to Mixed boundary condition. even though their no converged solution.&nbsp;<\/p>\n<p><\/p>\n<p>I have set the temperature plot for my components i could see graph looks stable but their is very small change in temperature,&nbsp;<\/p>\n<p><\/p>\n<p>residual set for 1e-6&nbsp;&nbsp;<\/p>\n<p><\/p>\n<p>can any one tell is it because of convection problem ?&nbsp;<\/p>\n<p><\/p>\n<p>I am happy to take your suggestion.<\/p>\n<p><\/p>\n<p>&nbsp;<\/p>\n<p><\/p>\n<p>Regards,<\/p>\n<p><\/p>\n<p>VIJAY&nbsp;<\/p>\n<p><\/p>\n<p>&nbsp;<img decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/attachments\/24f899ff-f391-4723-b1cf-a92f0090fc9b\/4ef0ce5c-a967-4616-aa9d-a9620091e1ed_capture.jpg?width=690&amp;upscale=false\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-30521","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_old_topic_id":["2692"],"_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":["1422"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["30521"],"_bbp_forum_id":["27792"],"_bbp_engagement":["25","199","158134"],"_bbp_voice_count":["3"],"_bbp_reply_count":["9"],"_bbp_last_reply_id":["65222"],"_bbp_last_active_id":["65222"],"_bbp_last_active_time":["2018-09-28 14:15:59"]},"test":"tcs-engineer"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/30521","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\/30521\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=30521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}