{"id":256173,"date":"2019-07-02T06:47:05","date_gmt":"2019-07-02T06:47:05","guid":{"rendered":"\/forum\/forums\/topic\/discovery-live-convection-in-air-extremely-high-surface-temperature\/"},"modified":"2022-08-23T08:27:01","modified_gmt":"2022-08-23T08:27:01","slug":"discovery-live-convection-in-air-extremely-high-surface-temperature","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/discovery-live-convection-in-air-extremely-high-surface-temperature\/","title":{"rendered":"Discovery Live Convection in Air &#8211; extremely high surface temperature"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/discovery\/2019\/07\/11301.jpg\" alt=\"\" width=\"1700\" height=\"1057\" class=\"alignnone size-full wp-image-248502\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/discovery\/2019\/07\/11302.jpg\" alt=\"\" width=\"1711\" height=\"1066\" class=\"alignnone size-full wp-image-248503\" \/><\/p>\n<p> Dear Forum, <\/p>\n<p> Actually, I\u2019ve set up a simple structure based on an IC with attached heatsink. <\/p>\n<p> I set plastic to the IC body and aluminium to the heatsink. The ambient temperature is defined with 40\u00b0C. <\/p>\n<p> The heat flow of the IC body is set to be 30 W and the convection in air parameter remains to the default value of 10 W\/m2C. <\/p>\n<p> Running the static thermal analysis I wonder about the extremely high temperature inside the IC body which is in the range up to 710\u00b0C. Also the heatsink is very hot, starting with a temperature of 466\u00b0C at the body faces. This temperature range seems to be not realistic. <\/p>\n<p> Once I change the convection in air temperature to 200 W\/m2C the overall temperature of this set-up decreases dramatically to a normal range of 50-120\u00b0C. <\/p>\n<p>&nbsp;<\/p>\n<p> So, I would like to know whether I did a systematically error in the simulation set-up or are special requirements which must be taken into account using the convection in air temperature. <\/p>\n<p> Thank you for any advise and comments. <\/p>\n","protected":false},"template":"","class_list":["post-256173","topic","type-topic","status-closed","hentry","topic-tag-discovery-live-2","topic-tag-thermal"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["278267"],"_bbp_likes_count":["0"],"_btv_view_count":["216"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["256173"],"_bbp_forum_id":["27789"],"_bbp_engagement":["126","278267"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["269203"],"_bbp_last_active_id":["269203"],"_bbp_last_active_time":["2019-07-02 11:10:50"]},"test":"dirk-linnenbrueggerflowcad-de"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/256173","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\/256173\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=256173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}