Hello i have problem with imported model. I want to observe the quantity of solar radiation hitting on the surfaces. (I imported model from the Autocad 2015 (.dwg). When the importing ends the bar appears to me:

The model is now imported and it looks fine.

Then i created the model for flow simulation with help of Wizard, I set Heat conduction in solids; Heat conduction in solids only, Radiation and solar radiation is checked too.

(i want the observe only radiation)

Then i use the;

Flow simulation -> Tools -> check geometry

When i use the check button, the report say me: Status:succesful, geometry is OK

I want to put the "surface goal"

But the error will show.

Will anybody help me, how to solve it?

I have not any openings in model; and no error in model (no )

i just tried these link, but it doesnt help: