The high temperatures goes down to 1 to 5 faces that are limited to over 5000K after multiple iterations.

The mesh quality passes the quality test in the general section. 

And under the boundary conditions tab, for the inlet condition, I am setting the radiation to look like this:

I am setting the inlet temperature to 2.7K as well as fixing the air temperature to 2.7K under the cell zone conditions tab. I don't have the fluid flowing out anywhere because the bottom of the cone is closed; this bottom face is where I need to measure the temperature.

I would to heat up, but still be relatively low in temperature, close to this 2.7K, but they are well above that, in the 1000s K.

Thank you.