The name 'NOW Bubble dmin' is not recognised as a variable or expression. The name 'NOW Bubble Weibul mu' is not recognised as a variable or expression. The name 'NOW Bubble d32 Weibull' is not recognised as a variable or expression. The name 'AIAD Bubble IAD' is not recognised as a variable or expression. The name 'AIAD IAD' is not recognised as a variable or expression. The name 'AIAD Interface Length scale' is not recognised as a variable or expression.

I tried to simulate an unsteady simulation in CFX pre but I get the following error:Įrror processing expression 'Interface Length Scale'. I tried to type just T or p but doing so I am afraid the software is interpreting density as a function of only one variable. If I type T,p (to make the software understand that density varies with temperature and pressure) I get the following error:ĭoes anyone know how to sort out this problem? I managed to import the table in CFX by right-clicking on User Functions > Insert > Table Function > Import., but when I edit the density under the material's properties, the software requires to specify an index between brackets. csv format where the first two columns contain the values of temperature and pressure and the last column the values of density corresponding to a specific couple of temperature and pressure values. Therefore, instead of inserting a mathematical expression in a polynomial form, I created a table in Excel in the. In particular, density is a function of both temperature and pressure. I designed a cryogenic centrifugal pump for liquid hydrogen and I simulated it in CFX 22.2 trying to account for density variation throughout the impeller.

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