Auto-generated expressions

The software auto-generates expressions for the variables listed in the following table.

Variable description	Variable name	Alias (if any)	Auto-generated expression name	Equivalent formula
Angle	angle		angle	ug_var(“angle”)
Angular velocity	angular velocity		angular_velocity	ug_var(“angular velocity”)
Cartesian coordinates:
X	x	xloc	x	ug_var(“x”)
Y	y	yloc	y	ug_var(“y”)
Z	z	zloc	z	ug_var(“z”)
Components of unit normal vectors at the centroids of plate and shell elements, and solid element faces, and at the midpoint of plate, shell, solid, and axisymmetric element edges:
X-component	nx		nx	ug_var(“nx”)
Y-component	ny		ny	ug_var(“ny”)
Z-component	nz		nz	ug_var(“nz”)
Contact pressure	contact pressure		contact_pressure	ug_var(“contact pressure”)
Corner identification number	corner id		corner_id	ug_var(“corner id”)
Cylindrical coordinates:
Radius	radius	r	radius	ug_var(“radius”)
Theta	theta		theta	ug_var(“theta”)
Axial	axial		axial	ug_var(“axial”)
Dynamic viscosity	dynamic viscosity		dynamic_viscosity	ug_var(“dynamic viscosity”)
Edge identification number	edge_id		edge_id	ug_var(“edge_id”)
Element identification number	element_id		element_id	ug_var(“element_id”)
Face identification number	face_id		face_id	ug_var(“face_id”)
Fluid	fluid		fluid	ug_var(“fluid_id”)
Fluid temperature	fluid temperature	tempf	fluid_temperature	ug_var(“fluid temperature”)
Frequency	frequency		frequency	ug_var(“frequency”)
Gap distance	gap distance		gap_distance	ug_var(“gap distance”)
Heat flow rate	heat flow rate		heat_flow_rate	ug_var(“heat flow rate
Iteration value	iter_value		iter_value	ug_var(“iter_value”)
Length	length		length	ug_var(“length”)
Mass density	mass density		mass_density	ug_var(“mass density”)
Mass flow rate	mass flow rate		mass_flow_rate	ug_var(“mass flow rate”)
Node identification number	node_id		node_id	ug_var(“node_id”)
Parametric coordinates:
U	u	uparm	u	ug_var(“u”)
V	v	vparm	v	ug_var(“v”)
W	w	wparm	w	ug_var(“w”)
Pressure	pressure	press	pressure	ug_var(“pressure”)
Result	result		result	ug_var(“result”)
Rotational speed	rotational speed	rs	rotational_speed	ug_var(“rotational speed”)
Solid	solid		solid	ug_var(“solid_id”)
Solution	solution		solution	ug_var(“solution_index”)
Specific heat	specific heat		specific_heat	ug_var(“specific heat”)
Spherical coordinates:
Radius	radius	r	radius	ug_var(“radius”)
Theta	theta		theta	ug_var(“theta”)
Phi	phi		phi	ug_var(“phi”)
Step	step		step	ug_var(“step_index”)
Temperature	temperature	temp	temperature	ug_var(“temperature”)
Temperature difference	temperature difference		temperature_difference	ug_var(“temperature difference”)
Thermal capacitance	thermal capacitance		thermal_capacitance	ug_var(“thermal capacitance”)
Thermal conductivity	thermal conductivity		thermal_conductivity	ug_var(“thermal conductivity”)
Thickness	thickness	thick	thickness	ug_var(“thickness”)
Time	time		time	ug_var(“time”)
Velocity	velocity		velocity	ug_var(“velocity”)
Volumetric flow rate	volume flow rate		volume_flow_rate	ug_var(“volume flow rate”)

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Inputs to expressions

Restrictions on auto-generated expressions

Fields in expressions

Units in expressions

Migrating expressions that include angular measures

Inconsistent units warnings

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Mathematical functions in expressions

Lookup functions in expressions

Utility functions in expressions

Thermal-flow functions in expressions

Field function

Mapped field function

Mathematical operators in expressions

Temperatures in expressions

Complex numbers in expressions

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Auto-generated expressions, Simcenter 3D 2021.1 Series

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