Radiation Modeling in CCM+

Alex

I am modeling solar radiation gain into an enclosed system with and without a sunshield. After setting up the problem, initialising, adding in solar and gray body radiation, setting emissivity, reflectance and transmissiviry values, generating patches I get an error when trying to calculate view factors:

"Assertion error: Attempt to access unallocated BoundaryTransmissivity storage in boundary faces in 'boundary X'"

I think the problem is in my set-up, but not sure where.

Any advice would be appreciated.

The emissivity, trans and reflectance add up to 1 for all boundaries/imterfaces.