Pre-NX 6 Initial 3D Flow Conditions (Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal)

Note:

Initial 3D Flow Conditions is a deprecated constraint replaced in NX 6 by the Initial Conditions constraint which offers the same functionality and more. See Initial Conditions for more information. You cannot create a constraint of this type in the current version of this software, but you can edit existing constraints.

Region to Apply 3D Flow Initial Conditions to
Select Object	Lets you select the geometry, elements, or mesh points on which you specify the initial conditions.Excluded lets you remove individual entities from within your selected object.
Temperature and Pressure group
Initial Temperature and Pressure	Specify lets you define a local temperature and/or pressure for the selected region.Use Global accepts the default temperature and pressure defined on the Initial Conditions page of the Solution dialog box.
Initial Temperature	Specifies the value of the initial temperature. See Additional magnitude options for more information.
Initial Pressure	Specifies the initial absolute pressure of the fluid in the selected 3D geometry or elements. See Additional magnitude options for more information.
Initial Velocity
X ComponentY ComponentZ Component	Specifies the values of the X, Y, and Z components of fluid movement at the start of the analysis. See Additional magnitude options for more information.
Initial Humidity
Humidity	Lets you select the method to define the initial humidity. Relative lets you define the initial humidity by specifying Relative Humidity (%) as a percentage of the partial pressure of water vapor in the mixture to the saturated vapor pressure of water at a given temperature. Specific lets you define the initial humidity by specifying the Water Vapor to Dry Air Mass Ratio.See Additional magnitude options for more information.
Initial Scalar
Select Scalar	Lets you select a previously defined Scalar modeling object to specify the scalar mixture, or create a new Scalar modeling object. The Scalar modeling object is a deprecated modeling object replaced in NX 7.5 by the Homogeneous Mixture modeling object and the Tracer Fluid modeling object. See Homogeneous Gas Mixture and Tracer Fluid for more information.
Scalar to Mixture Mass Fraction	Lets you specify the initial mixture of the scalar fluid mass to the mixture mass. See Additional magnitude options for more information.
Card Name	Initial 3D Flow Conditions

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Pre-NX 6 Initial 3D Flow Conditions (Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal), Simcenter 3D 2021.1 Series

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