Power Law Exponent#

Power Law Exponent = CONSTANT <float> []

Description / Usage#

This card is used to specify the model for the power-law exponent parameter of the POWER_LAW, CARREAU, BINGHAM, CARREAU_WLF, CURE, SUSPENSION, FILLED_EPOXY, POWERLAW_SUSPENSION, CARREAU_SUSPENSION, and HERSCHEL_BULKLEY fluid options of the Liquid Constitutive Equation card.

Definitions of the input parameters are as follows:

CONSTANT

Name of the model for the power-law exponent.

  • <float> - the value of the power-law exponent. This variable is normally n in the constitutive laws.

LEVEL_SET

Name of the model for level-set dependent power law exponent. Specifically used for changing the exponent from one constant value on the negative side of the interface to another constant value on the positive side. The model requires three floats:

  • <float1> - the value of power-law exponent in the negative regions of the level set function.

  • <float2> - the value of power-law exponent in the positive regioons of the level-set function.

  • <float3> Length scale over which the transition occurs. If this parameter is set to zero, it will default to one-half the Level-Set Length Scale value specified.

Examples#

The following is a sample card that sets the power law exponent to 0.2:

Power Law Exponent = CONSTANT 0.2

Technical Discussion#

See Description/Usage for Liquid Constitutive Equation card.

References#

No References.