{"id":379859,"date":"2024-08-22T16:24:44","date_gmt":"2024-08-22T16:24:44","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/?post_type=topic&#038;p=379859"},"modified":"2024-08-22T16:24:44","modified_gmt":"2024-08-22T16:24:44","slug":"total-vs-static-temperature-for-thermal-bc-of-mass-flow-inlets","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/total-vs-static-temperature-for-thermal-bc-of-mass-flow-inlets\/","title":{"rendered":"Total VS Static Temperature for thermal BC of mass flow inlets"},"content":{"rendered":"<p>Hi all!<br \/>I just realized that the thermal boundary condition for mass flow inlets requires total temperature. I usually just typed in the design static temperature, and it would not change a whole lot having studied slow gaseous flows.<\/p>\n<p>But when I&#8217;ll be studying faster, compressible flows, one hand I have Fluent asking me this piece of information, on the other hand my hard input data might be just static temperature and mass flow rate; inferring what the stagnation temperature (hence velocity, hence density) might be is not trivial.<br \/>So, my question here is not really about CFD, more like plain fluid dynamics: how would you suggest to proceed?<br \/>Would you typically do some test runs to figure out the ballpark of the stagnation temperature contribution, or would you do some pen-and-paper estimation?<br \/>Or again, do you ever happen to have total temperature as actual hard design input data?<\/p>\n<p>I want to stress again that this might not really be a question about Fluent per se, as much as about your experience as engineers plugging in boundary conditions.<br \/>Of course I&#8217;d be better off just using the static temperature, but I can very much guess that the solution needs the broader instruction brought by the total one.<\/p>\n","protected":false},"template":"","class_list":["post-379859","topic","type-topic","status-publish","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":["131.175.66.129"],"_bbp_subscription":["60427","199"],"_btv_view_count":["175"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["379859"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","60427"],"_bbp_voice_count":["2"],"_bbp_reply_count":["3"],"_bbp_last_reply_id":["379983"],"_bbp_last_active_id":["379983"],"_bbp_last_active_time":["2024-08-23 10:12:11"]},"test":"alex-chiellamail-polimi-it"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379859","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":1,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379859\/revisions"}],"predecessor-version":[{"id":379862,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/379859\/revisions\/379862"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=379859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}