WUFI

I will be very grateful if someone can give me some clues or comments. Thank you.

Hi experts, I am modeling a roof system comprised of the following layers, from the outermost to the innermost: metal deck, ventilated cavity, underlayer, PIR insulation coated with aluminum facers, and metal deck. Is it necessary to examine the amount of water content in the outer 1 cm of the PIR i...

Thank you so much, it actually works.

Dear experts,

I do not know why the resolution of the WUFI on my screen is weird. The characters in the GUI look blurry.
The characters in the WUFI graph are too small. Please see the picture below. Any idea how to fix it? Thank you in advance.

Dear experts, For rain penetration, ASHRAE Standard 160 says the deposit site for the rainwater shall be the exterior surface of the water-resistive barrier. In my target component, the outermost layer is the metal deck, and the layer next to it is a water-resistive barrier, followed by a PIR board ...

Thanks for your reply.
Is it from Sedlbauer, K. (2001). Vorhersage von Schimmelpilzbildung auf und in Bauteilen: Lehrstuhl fur Bauphysik.?

Hi experts,

Could you please provide me the experssion of the LiMs curves? I want to reproduce the curves using Excel.

Hi experts,

Could you please provide the source of the signal light system in WUFI bio?

Thanks

Hi Thomas and Christian, To investigate the amount of condensation of the air near the metal deck, Christian suggests I spit a 1 mm air layer and investigate its water content. However, I checked the tutorial "assessment of condensation in hydrophobic mineral wool", and it suggests that fo...

Hi experts, I know the maximum water content is determined by the porosity of the material in WUFI. MWC=1000*porosity (kg/m^3) However, I am not sure if this is an assumption in the numerical calculation or if it has physical meaning? Take PIR Board as an example, the free saturation WC is 2.15 kg/m...

Dear Daniel, I am still a bit confused about the necessity of seperating the mineral fiber layer. In the tutorial, the mineral fiber layer was split, and the outer 1 mm (or 1cm) layer was targeted. Can we just keep the mineral fiber layer in complete and examine the outer few elements in post-proces...

Dear Daniel,

Thanks for the reply. It helps.

Hi experts, Regarding the "Guideline for assessing condensation problems in hydrophobic mineral fiber", is there any explanation about the reason using 1 mm specimen for measured free saturation material, but use 1 cm specimen for no measured free saturation material? I understand we wanna...

Thanks, Thomas. It is now a bit more clear to me.

Thank you, Thomas.
I was looking at the "Dialog: Surface Transfer Coefficients" section and there is not citation there.
Now I got it.

Cheers