Learning Forum

[OAnderson]

Hi all,

I am trying to input a material property (mass density) expression in Fluent:

but obtain "current value; Expression does not evaluate to a single value".

Perhaps a typo that I can't find? I've used StaticTemperature in other expressions without problems.

Thanks for your help!

[Federico]

This expression is a function of Static Temperature, so indeed it does not evaluate to a single value and you will not get an output from the Expression window. It does not mean however that this is a problem. Try initializing your solution and do a Contour plot for this expression to check that it evaluates to the right range.

[Rob]

As an observation, how did you generate that polynomial? Just curious if you'd be better off with piecewise linear or similar depending on rounding error.