Locating element faces by geometry

In ANSYS I can locate nodes using nselect and specifying the x, y or z cordinates and then find the element faces associated with those nodes. I then specified the heat transfer coefficient for this edge.

Is there a way to do this is Calculix?

I doubt it. You can create element sets and then select specific faces to do what you are asking, but this has to be done in a pre-processor, such as cgx or PrePoMax.

The following commands in cgx are helpful here:
qadd, qrem, seta, setr, enq, send setname abq film
Please look into the manual for details about them.

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