{"id":358200,"date":"2024-03-20T18:14:45","date_gmt":"2024-03-20T18:14:45","guid":{"rendered":"\/forum\/forums\/topic\/air-flow-caused-by-heat-source-in-closed-volume\/"},"modified":"2024-03-20T18:14:45","modified_gmt":"2024-03-20T18:14:45","slug":"air-flow-caused-by-heat-source-in-closed-volume","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/air-flow-caused-by-heat-source-in-closed-volume\/","title":{"rendered":"Air flow caused by heat source in closed volume"},"content":{"rendered":"<p>Hello, I have some questions about my case. I have closed volume ( in photo one) that consist of enclosure, fluid and then some solids, contact is only on LED to PCB to heat sink and then all solids has contact to fluid, if I understand it right. I also know that heat dissipation from LED will be 10W from each ( there are two of them). I want to simulate heat transfer from LED to PCB and then to Heat sink which are all solids. Then I want to know how the air flow of the fluid will be looking and also temperature, ideally not like on the last photo. I think I have problem with boundary settings. I made shared toplogy in spaceclaim (photo 2). I want to ask about update boundaries (photo 3), if LED-PCB and PCB-heat sink should be interface and all others wall? For all advice how to solve this case I will be thankful.&nbsp; &nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710954309-Geometria.png\" alt=\"\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710954434-Shared geometry spaceclaim.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710957443-Update boundaries mesh.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710954378-Update regions mesh.png\" alt=\"\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710957822-Volume mesh.png\" alt=\"\"><\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710958129-Solution boundary conditions.png\" alt=\"\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/03\/20-03-2024-1710954816-Teplota.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-358200","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["125351","13659"],"_bbp_author_ip":["23.52.43.10"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["232"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["358200"],"_bbp_forum_id":["27792"],"_bbp_engagement":["13659","125351"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["362466"],"_bbp_last_active_id":["362466"],"_bbp_last_active_time":["2024-04-16 12:29:39"]},"test":"xjuristastuba-sk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/358200","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\/358200\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=358200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}