Prescribing a field and its flux on the same surface !

[slam00000]

In the same analysis step I have a surfec on which the temperature is prescribed as a BC , on the same surface I applied loading : heat flux. I expected the job to be aborted as two fields that are cojugate are applied on the same surface, but the job continued running. How that could happen.
Thanks for help

 

[jst9804]

A fix temperature and a fix heat flux could exist at the same time. For example, the sunlight shine on a plate on the ground. The plate may have a fix temperature such as 50 C, meanwhile it may transfer a fix heat flux such as 20 w/m2 into the ground beneath it.
Take care

jst9804