Hi all,<\/p>\n
<\/p>\n
I’m trying to run an electronics cooling simulation in ANSYS CFX. I’m using a very similar setup to the “ANSYS CFX Tutorials – Section 14 (Conjugate Heat Transfer in a Heating Coil)” tutorial. I can take screenshots and provide additional information if necessary, but I’m not sure what information would be helpful at the moment. <\/p>\n
<\/p>\n
My inlet temperature is set to a constant 21 degrees C, and my inlet velocity is set to 3 m\/s. My outlet is set to an “opening” with a static temperature set to “areaAve(T)@REGION:outlet” (with “outlet” being the named selection name for the outlet geometry). I have a series of blocks with a constant heat flux. These blocks are in one solid domain, and they’re connected by very thin sheet metal tabs (in a different solid domain) to more blocks that fluid is flowing over. The blocks and tabs are currently aluminum, and the fluid is air (the default “air” material available in CFX). <\/p>\n
<\/p>\n
For some reason, parts of my solid domain are showing up as being a few degrees below the inlet temperature. (Particularly, my very thin tabs are ~19 degrees, which is below my inlet 21-degree temperature). I was wondering if this is a common problem people have? My mesh is very coarse right now and not good for accurate fluid flow; this was just my first attempt at setting up a full-scale simulation. Potential probems that I can think of are:<\/p>\n
-bad mesh (would this cause the temperature to go below the inlet temperature?)<\/p>\n
-too many solid domains that aren’t connected properly (I have a solid domain defined for each area that I want to be able to look at individually in the CFX-Post – is there a better way to do this that allows all the solids to stay in the same domain?)<\/p>\n
-Some setting I’m not aware of that creates a separate ambient temperature or causes parts to be below the inlet temperature in some other way. (Maybe the default “air” material has a temperature associated with it?)<\/p>\n
<\/p>\n
If anyone has any insight, please let me know. I can attach files (although this file is relatively large) or take screenshots of anything you need. <\/p>\n","protected":false},"template":"","class_list":["post-240416","topic","type-topic","status-closed","hentry","topic-tag-ansys-cfd-1","topic-tag-ansys-cfx","topic-tag-AnsysCFX2021R2-1","topic-tag-cfd","topic-tag-cfx","topic-tag-cfx-setup-1","topic-tag-fluid-thermal","topic-tag-fluids","topic-tag-thermal-analysis"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["267378","68667"],"_bbp_author_ip":["23.220.96.180"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1927"],"_edit_lock":["1668124470:196537"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["240416"],"_bbp_forum_id":["27796"],"_bbp_engagement":["68667","267378"],"_bbp_voice_count":["2"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["240911"],"_bbp_last_active_id":["240911"],"_bbp_last_active_time":["2022-11-15 19:52:01"]},"test":"hildeblioregonstate-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/240416","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\/240416\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=240416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}