Open version 2.1 projects with WUFI-2D version 3.3

[ITeCons]

Hello,
I want to study the differences between version 2.1 and version 3.3 of WUFI-2D in a project. I have some projects in version 2.1. and I want to open them with version 3.3. Is it possible?
If I can not export the entire project, I would like to export, at least, the geometry and the grid. In version 2.1 was not possible insert air exchange sources and differents climates on the same surface of a wall and I have to simulate them with fictitious materials. Currently, with version 3.3., I want to calculate the same walls but with a construction more realistic (with less materials and with air exchange sources to have a differents climates on the same surface on ventilation walls) and compare results.
Best Regards,

[veitner]

Hello,

with version 3.0 of WUFI2D we deployed a tiny converter program called "w2dconv". This program is more than 6 years old and I have no idea if it still works. But give it a try. Attached you will find the mentioned program.

Best regards
Veit

[ITeCons]

Hello Veit,

Thanks! It runs but it does not keep some information interesting for my investigation (grid, positions of the monitors, ...).

However, I have different results with two versions when I use a user defined material.

If I use a database material (example: Sander sandstone) the results are similar, except for some timesteps when the humidity decreases suddenly.


But, when I use a material whose properties were assessed experimentally, the results are very differents.

I am simulating a suction experiment and the material is the same than this topic:

http://www.wufi-forum.com/viewtopic.php?f=15&t=446
In simulations, I only change the material, sander sandstone to calcareous stone with these properties:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="wufimaterial.xslt"?>
<WUFIMaterial UnitSystem="0">
<Material version="2" dbID="-4">
<Name>Pedra_calcaria_tese</Name>
<Info></Info>
<Color>$808080</Color>
<Func6ReadOnlyIndex>1</Func6ReadOnlyIndex>
<IsProduct>FALSE</IsProduct>
<ManufacturerID>-1</ManufacturerID>
<ProductWebLink></ProductWebLink>
<DateDB>1899-12-29 00:00:00</DateDB>
<UpdateDB>1899-12-29 00:00:00</UpdateDB>
<IsLocked>FALSE</IsLocked>
<Scalars Count="13">
<Scalar id="1" name="Bulk density" unit="kg/m³" value="2155,0"/>
<Scalar id="2" name="Porosity" unit="m³/m³" value="0,197"/>
<Scalar id="3" name="Specific Heat Capacity, Dry" unit="J/kgK" value="1000,0"/>
<Scalar id="4" name="Thermal Conductivity, Dry ,10°C" unit="W/mK" value="1,33"/>
<Scalar id="5" name="Water Vapour Diffusion Resistance Factor" unit=" - " value="29,4"/>
<Scalar id="6" name="Reference Water Content" unit="kg/m³" value="1,583"/>
<Scalar id="7" name="Additional Rel. Humidity" unit=" - " value=""/>
<Scalar id="8" name="Additional Water Content" unit="kg/m³" value=""/>
<Scalar id="9" name="Free Water Saturation" unit="kg/m³" value="188,0"/>
<Scalar id="10" name="Water Absorption Coefficient" unit="kg/m²s^0.5" value="0,024"/>
<Scalar id="11" name="Drying Factor" unit=" - " value="10"/>
<Scalar id="12" name="Moisture-dep. Thermal Cond. Supplement" unit="%/M.-%" value=""/>
<Scalar id="13" name="Typical Built-In Moisture" unit="kg/m³" value="1,58"/>
<Scalar id="14" name="Temp-dep. Thermal Cond. Supplement" unit="W/mK²" value=""/>
<Scalar id="15" name="Thermal Conductivity, Design Value" unit="W/mK" value=""/>
</Scalars>
<Functions>
<Function id="1" name="Moisture Storage Function" version="1">
<Generated>FALSE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="18" version="2" xunit=" - " yunit="kg/m³">
<Item Index="1" x="0,0" y="0,0"/>
<Item Index="2" x="0,04" y="0,52151"/>
<Item Index="3" x="0,112" y="0,5926"/>
<Item Index="4" x="0,348" y="0,87277"/>
<Item Index="5" x="0,586" y="1,04302"/>
<Item Index="6" x="0,8" y="1,58348"/>
<Item Index="7" x="0,9" y="2,11688"/>
<Item Index="8" x="0,92" y="2,31858"/>
<Item Index="9" x="0,95" y="2,8"/>
<Item Index="10" x="0,96" y="3,05905"/>
<Item Index="11" x="0,98" y="4,01412"/>
<Item Index="12" x="0,99" y="5,28846"/>
<Item Index="13" x="0,995" y="6,84162"/>
<Item Index="14" x="0,999" y="12,49886"/>
<Item Index="15" x="0,9995" y="16,08585"/>
<Item Index="16" x="0,9999" y="28,18021"/>
<Item Index="17" x="0,99995" y="35,35823"/>
<Item Index="18" x="1,0" y="188,0"/>
</Items>
</Function>
<Function id="2" name="Liquid Transport Coefficient, Suction" version="1">
<Generated>TRUE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit="kg/m³" yunit="m²/s">
<Item Index="1" x="0" y="0"/>
</Items>
</Function>
<Function id="3" name="Liquid Transport Coefficient, Redistribution" version="1">
<Generated>TRUE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit="kg/m³" yunit="m²/s">
<Item Index="1" x="0" y="0"/>
</Items>
</Function>
<Function id="4" name="Thermal Conductivity, moisture-dependent" version="1">
<Generated>FALSE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit="kg/m³" yunit="W/mK">
<Item Index="1" x="0" y="1,33"/>
</Items>
</Function>
<Function id="5" name="Water Vapour Diffusion Resistance Factor, moisture-dependent" version="1">
<Generated>FALSE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit=" - " yunit=" - ">
<Item Index="1" x="0" y="29,4"/>
</Items>
</Function>
<Function id="6" name="Thermal Conductivity, temperature-dependent" version="1">
<Generated>FALSE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit="°C" yunit="W/mK">
<Item Index="1" x="10" y="1,33"/>
</Items>
</Function>
<Function id="7" name="Enthalpy, temperature-dependent" version="1">
<Generated>FALSE</Generated>
<GenerationMode>0</GenerationMode>
<Items Count="1" version="2" xunit="°C" yunit="J/kg">
<Item Index="1" x="0,0" y="0,0"/>
</Items>
</Function>
</Functions>
</Material>
</WUFIMaterial>

I have to change the factors SOR and NSW to 0.01 and 20. In other models I use the ADI-solver but some diverge for all values.

But I got different results with a single wall (80 cm high and 20 cm thick), and it is due to the material. I think I have to change another parameter or some input data are not valid for calculations. I am also using a weather file (measured in laboratory, .kli) but with other weathers continues the same problem.





Best Regards,

[veitner]

Hi,

we dropped some things (at least monitor postions) but I've no idea about the grid. In my memory it should has been possible to convert - but it is easy to regenerate.

The results look more reasonable to me - except the CALCAREOUS-STONE where the change is too big.

Of course we fixed numerous bugs during the last 10 years - when I remember correctly also one regarding the suction/redistribution coefficients (when the coefficients were expected to be generated/approximated but the table was not empty data from the table has been used) - perhaps thats the reason for the difference. You can find more info about bug-fixes on http://www.wufi.de/wufi/updates_e.html (the mentioned bug is listed there at the very bottom of the page and 12 years old - looks like you have not updated since )

Regards
Veit