WUFI

I want to simulate the grave.
It's form is different inside and outside.



I don't know how to consider both form.
Thickness is over 3m... I wonder how to calculate the gap between the wall(blue question mark area).
Because of geometry, I think solar radiation is not reflected enough.



How to modeling the geometry When the form is different inside and outside?
and is there material database of soil(on the grave)?

Even if the geometry inside and outside is different and the walls are very thick, we would model it with the outer dimensions. However, there will be an error, e.g. a overestimated heat exchange, because of the overlapping.

For the soil material, i have attached a project with some. However, they are not official, please check the values!