CSV file format for bivariate fluid material properties (legacy)

You can specify bivariate fluid material properties using a Generic Entity type in the Advanced Controls simulation object that contains the path to a comma separated values (CSV) file. The CSV file contains the materials and their bivariate properties.

Note:

Use this method if you want to define a bivariate thermal expansion coefficient. For other fluid material properties, you can define their dependency on temperature and pressure in the Material dialog box. For more information, see Bivariate fluid material properties.

CSV file format

Material name

Fluid property X1, Fluid property X2 [optional], Fluid property Y

X1,X2,Y

X1,X2,Y

…

Fluid property X1, Fluid property X2 [optional], Fluid property Y

X1,X2,Y

X1,X2,Y

…

Material name

Fluid property X1, Fluid property X2 [optional], Fluid property Y

X1,X2,Y

X1,X2,Y

…

Notes on strings in the CSV file

String	Notes
Material name	The name of material must exactly match the one defined in the software (case sensitive).One CSV file may contain several material names.
Fluid property X1, Fluid property X2 [optional], Fluid property Y	For each material you can define several properties as bivariate.Supported property names for Y are:DENSITYSPECIFIC_HEAT_PSPECIFIC_HEAT_VDYNAMIC_VISCOSITYCONDUCTIVITYTHERMAL_EXPANSION_COEFFICIENTA property may depend on one (X1) or two (X1 and X2) variables.X1 and X2 may only be temperature or pressure.Property names are not case sensitive.
X1,X2,Y	You can enter values in either of the following orders depending on whether your property varies with one or two variables: X1, X2, Y X, YYou must completely define the values for a property depending on two variables. This means: number of Y = number of X1 * number of X2Enter all properties in the solution units used for the model. You must enter pressure in absolute values. Do not use deltas.

CSV file example

In the following example, three properties are defined for the material Air and one for the material ALUMINUM_2014. The solution units used for the model are:

• C for temperature

• kPa for pressure

• kg/m3 for density

Note:

The name of materials match exactly the one defined in the software.

The properties are not case sensitive.

Air Temperature,pressure,DENSITY 0,1000.0,1E-3 0,2000.0,2E-3 10.1, 1E3, 0.0013456 10.1, 2E3, 0.0023456 20.2 ,1000,0.003427365 20.2 ,2000,0.103427365 Pressure,Temperature,DYNAMIC_VISCOSITy 2000,10,2 1000,10,10 1000,0,1 2000,0,11 1000,20,3 2000,20,30 Temperature,Pressure,conductivity -10,1.1,20 0,1.1, 500 5,1.1,50 ALUMINUM_2014 Temperature,thermal_expansion_coefficient 60,2000 10,20 -10,400 40, 6e4 70.2, -30.1234

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CSV file format for bivariate fluid material properties (legacy), Simcenter 3D 2021.1 Series

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