Output Variables

Simulation > Creo Flow Analysis > Preprocessing > Defining Physics > Heat > Output Variables

Output Variables

This section describes the outputs you can obtain from the Heat module. The following types of data are available for output from the Heat module:

• Primary Variables

• Properties

• Derived Variables

• Boundary Variables

• Integrated Quantities

• Heat Coefficient Distribution

• Flux Distribution

• Velocity Distribution

• Temperature Distribution

Output of Primary Variables

Primary variables are the fundamental variables for a given set of modules and models. They are required as part of the solution. They may appear in the GUI viewing window for selected geometric entities and output to the ASCII file Filename_points.txt and viewed in the GUI as X-Y plots for point probes.

Primary Variables for Heat Module
Label in GUI	Label in GUI X-Y Plot Menu	Label in points.txt	Label in integral.txt	Definition	Units	Display/Output Options
Temperature	Temperature	T_	NA	Temperature	K	At a Point and in the GUI Display Window

• Primary variables for point probes are automatically activated and stored in the ASCII file Filename_points.txt

• Primary variables are output to Filename_points.txt. They can then be selected and will appear in the X-Y plot.

• Primary variables are automatically activated for selected geometric entities such as boundaries, derived surfaces, interfaces, streamlines, particles, and volumes, depending on the modules and models that are selected.

• Primary variables for the Heat module can appear in the GUI viewing window for selected geometric entities.

Output of Property Variables

Property variables are the physical properties for the fluids and solids in the domain and are required as part of the solution. They can appear in the GUI viewing window for selected Geometric Entities. They are also output to the ASCII file Filename_points.txt, and appear in the GUI as an X-Y Plot for Point Probes.

Physical Properties for Heat Module
Label in GUI Variables List	Label in GUI X-Y Plot Menu	Label in points.txt	Label in integral.txt	Definition	Units	Display or Output Options
Heat Conductivity	NA	NA	NA	Effective conductivity	W/m-K	At a Point and in the GUI Display Window
Heat Capacity	NA	NA	NA	Effective heat capacity	J/kg-K	At a Point and in the GUI Display Window

Physical property output for the Heat module:

• Automatically activated for selected geometric entities, other than point probes, depending on the models that are selected.

• Can appear in the GUI viewing window for selected geometric entities, such as boundaries, derived surfaces, interfaces, streamlines, particles, or volumes.

Output of Derived Variables

Derived variables are engineering data computed from the primary variables. They are not required as part of the solution, however derived variables can provide valuable information for analysis of the results. Derived variables can appear in the GUI viewing window for selected geometric entities and can also be output to the ASCII file Filename_points.txt, and viewed in the GUI as an X-Y plot for selected point probes, or both.

Derived Variables for Heat Module
Label in GUI Derived Variables List	Label in GUI X-Y Plot Menu	Label in point.txt	Label in integral.txt	Definition	Units	Display or Output Options	Comments
Total Enthalpy	Total Enthalpy	Et_	NA	Total enthalpy	J	At a Point and in the GUI Display Window
Total Internal Energy	Total Internal Energy	Ht_	NA	Total internal energy	J/kg	Same
Total Temperature	Total Temperature	Tt_	NA	Total temperature	K	Same

Derived variable output for the Heat module is described below: :

• Automatically activated for selected geometric entities, (other than point probes) depending on the models that are selected.

• Can appear in the GUI viewing window for selected geometric entities such as boundaries, derived surfaces, interfaces, streamlines, particles, and volumes.

Output of Boundary Variables

Boundary variables are data associated with a boundary. While not required as part of the solution, boundary variables can provide valuable information for analysis of the results. They can appear in the GUI viewing window for selected geometric entities.

Derived Variables for Heat Flow Module
Label in GUI Derived Variables List	Label in GUI X-Y Plot Menu	Label in points.txt	Label in integral.txt	Definition	Units	Display or Output Options	Comments
Heat Flux	NA	NA	NA		W/m2	In the GUI Display Window	Boundaries and Interfaces
Heat Coefficients	NA	NA	NA		W/m2-K	Same as above	Same as above

Output of Integrated Quantities

Integrated Output are quantities that are integrated over a boundary, interface, or volume. When available and activated, they are stored in the ASCII file Filename_integrals.txt and can also appear in the GUI using the X-Y Plot.

Integrated Values for Heat Module
Label in GUI Properties	Label in GUI Plot Menu	Label in integral.txt	Units	Definition	Relevant Geometric Entity
Temperature	Temperature	T	K	Area averaged temperature	Boundaries and Interfaces
Total Temperature	Total Temperature	Tt	K	Area averaged total temperature	Boundaries and Interfaces
Flux Per Area	Flux	q	W/m2	Area averaged heat flux	Boundaries and Interfaces
Total Flux	Total Flux	Q	W	Total heat flux	Boundaries and Interfaces
Mass Avg. Tot. Enthalpy	Mass Avg. Tot. Enthalpy	Tt_m	J/kg	Mass averaged enthalpy	Boundaries and Interfaces
T	T	T	K	Volume averaged temperature	Volume
Mass Avg. Temperature	Mass Avg. Temperature	T_m	K	Mass averaged temperature	Volume
Enthalpy	Enthalpy	h	J/kg	Volume averaged enthalpy	Volume
Mass Avg. Enthalpy	Mass Avg. Enthalpy	h_m	J/kg	Mass averaged total enthalpy	Volume
Integrated Enthalpy	Integrated Enthalpy	H	J	Volume averaged internal energy	Volume
Total Enthalpy	Total Enthalpy	ht	J/kg	Volume averaged total internal energy	Volume
Mass Avg. Tot. Enthalpy	Mass Avg. Tot. Enthalpy	ht_m	J/kg	Mass averaged enthalpy	Volume
Integrated Tot. Enthalpy	Integrated Tot. Enthalpy	Ht	J	Sum of the internal energy	Volume
Energy	Energy	e	J/kg	Average enthalpy	Volume
Mass Avg. Energy	Mass Avg. Energy	e_m	J	Mass averaged enthalpy	Volume
Integrated Energy	Integrated Energy	E	J	Sum of the energy	Volume
Total Energy	Total Energy	et	J/kg	Average total energy	Volume
Mass Avg. Tot. Energy	Mass Avg. Tot. Energy	et_m	J/kg	Mass averaged total energy	Volume
Integrated Tot. Energy	Integrated Tot. Energy	Et	J	Sum of the total internal energy	Volume

Output of Heat Coefficient Distribution

The Heat coefficient distribution for selected Boundaries can be output as the separate file Filename_boundary_h_bc.txt. The heat coefficient distribution output is activated for a selected Boundary under the Heat module in the Properties panel.

The heat coefficient and coordinates of the boundary are stored in Filename_boundary_h_bc.txt:

When Steady state is selected, the heat coefficient distribution is output one time at the end of the run. When Transient is selected the heat coefficient distribution is output at the same frequency as the results files are saved, at the end of the run.

The heat coefficient distribution is available for Outlet, Specified Temperature, and Specify Total Temperature boundaries.

Output of Flux Distribution

The Flux Distribution output is activated for a selected Boundary under the Heat module in the Properties panel. The flux distribution for selected Boundary can be output in the file Filename_boundary_q_bc.txt.

The flux and coordinates of the boundary stored in Filename_boundary_q_bc.txt are shown below:

Flux distribution is output once at the end of a Steady state run or at the same frequency as the results file are saved for a Transient run. Flux Distribution is available for Adiabatic, Convection/Radiation, Outlet, Specified Heat Flux, Specified Temperature, and Specify Total Temperature boundaries.

Output of Temperature Distribution

The temperature distribution output is activated for a selected boundary under the Heat module in the Properties panel.

The temperature distribution for selected boundaries can be output as a separate file Filename_boundary_temperature.txt. The temperature and coordinates of the Boundary stored in Filename_boundary_temperature.txt are:

The Temperature Distribution is output once at the end of a Steady state run or at the same frequency as the results file are saved for a Transient run. Temperature Distribution is available for Adiabatic, Convection/Radiation, Outlet, Specified Heat Flux, Specified Temperature, Specify Total Temperature, and Symmetry and Boundaries.