WUFI

I have a construction which is expected. After the change with an additional vapor control layer, the simulation stops after about 4 months. The water content increases to 20 times and remains to the end at this level.
You have recommended to me in another simulation Computational Parameters ...

I use the weather data set of Trappes (Paris). He is drawn in the graph with a yellow dot. In the description of the climate data is "work in progress" specified. Can you tell me more about the usability of this data set?

The wall material is old brick from the IBP database. You can see it on the attachment. I wouldn`t say it is a sucking surface!

Have reduced the RH from 0.7 to 0.3.
The result has less problemes - iteration interrupted (269 times and only E-0 for theta, phi and rain), and Rain iteration (280 times and only E-0 for theta, phi and rain).

The attached diagram shows still a sudden rising of the water content from 8 to 20 kg ...

Thank you!

I have a pitched roof with slates. The slates, ventilated air cavity and batten are not simulated. The outer boundary of the simulation is the vapor tight underroof layer.

Which rain reduction factor should be used in this roof?

Where can I turn on the explezite radiation balance?

Hello Wufi Support

I have tried to investigate a simulation with internal insulation. The construction has an internal insulation of vacuum insolation panels (VIP), EPS and a vapor control layer. The wall material hard limestone is used. The result has some convergence Failed (412 times ...

I am looking at the transport of heat and moisture in a wall structure with Wufi 2D (no rain). The convergence analyzer informs me that convergence failed for one time step because Phi = 1e-4 > 5e-5 after 1500 iterations. Furthermore iteration was interrupted for 12 time steps because there was no ...