{"id":320726,"date":"2023-12-04T12:00:15","date_gmt":"2023-12-04T12:00:15","guid":{"rendered":"\/forum\/forums\/topic\/how-to-model-outlet-heat-reduction-using-udf\/"},"modified":"2023-12-04T12:00:15","modified_gmt":"2023-12-04T12:00:15","slug":"how-to-model-outlet-heat-reduction-using-udf","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/how-to-model-outlet-heat-reduction-using-udf\/","title":{"rendered":"How to Model Outlet Heat Reduction using UDF"},"content":{"rendered":"

Hi,<\/p>\n

I am interested to reduce the outlet temperature at the outlet of a domain (say a straight pipe) assuming that there is an heat exchanging effect occuring near the outlet (despite I am not modelling the sub-system). In other words, if I put in 1000C, I ought to get 800C if there is a 200C heat exchanging occuring. <\/p>\n

Could you tell me where can I start to learn the UDF (syntax and commands?) I was able to perform the simple transient UDF BC  Inlet using interpret function and resources found online.<\/p>\n

Secondly, will this operation also enable me to get a ‘revised\/tuned’ NOx formation value at the outlet because of the reduced 200C temperature at the outlet? Or to get the effect, I should set a new plane somewhere upstream before the outlet and implement the UDF + run the NOx formation model? So by the time the fluid reaches the outlet, the NOx will be representative of the final outlet value?<\/p>\n

Could you advise? <\/p>\n

Thanks!
Jee <\/p>\n","protected":false},"template":"","class_list":["post-320726","topic","type-topic","status-closed","hentry","topic-tag-combustion","topic-tag-fluent","topic-tag-nox-emissions","topic-tag-udf"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t