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Fluid Material Properties

Fluid Material Properties

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Fluid Material Properties

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The Fluid material type is a parameter used with the BEGIN MATERIAL data block.

Syntax

Fluid Air


{


FluidType =

"Newtonian"


Density =

r


SpecificHeat =

Cp(T)


Conductivity =

K(T)


Viscosity =

m (T) | ho


CoeffOfThermalExpansion =

β


VolumetricHeatSource =

Qvol }

Comments

FluidType denotes the type of fluid and it is "Newtonian". Note that the non-Newtonian materials are classified as Polymer for Polymer Processing and Workpiece for Metal Extrusion. The specific heat, thermal conductivity, and viscosity can be input as functions of temperature.

 

Fluid Material Properties Data Types

The following table contains descriptions of data types for fluid material properties:

Variable Name

Value Type

Remarks

FluidType

String in quotes

"Newtonian" = Newtonian;

Density

Real (Constant)

Density of the fluid

SpecificHeat

Real (Constant/Function of Temp.)

Function can be a TABLE1 or EXPRESSION

Conductivity

Real (Constant/Function of Temp.)

Function can be a TABLE1 or EXPRESSION

Viscosity

Real  (Constant/Function of Temp.)

TABLE1 or EXPRESSIONare used only for Newtonian fluid. For non-Newtonian fluids the viscosity is computed using the model specific expressions.

CoeffOfThermalExpansion

Real (Constant)

Thermal expansion coeff.

VolumetricHeatSource

Real(Constant)

Value per unit volume.

 

 

See Also:

Material Models