I'm working on the tutorial InjectionMixer, there need to define special condition for material water. So I modify to dynamic viscosity to expression Vist, but I change the value of thermal conductivity by mistake. This need to be change back to the default value, but I can not remember the default value. How to restore the data to the default value for the materials if it is changed by mistake. Thanks

Hi Windhair,

When you load the database, uncheck the "Load Library Data". If that doesn't work, check the MATERIALS file or create a new, dummy case and look up the defaults there.

You will only have modified the fluid properties for that simulation and will not have modified the installed defaults. So the above should work.

Regards, Robin

Thank Robin. Uncheck "load library data" works if the user specified data are real value, but is doesnt work if defined with Expression. The reload of the MATERIALS_default works well.