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
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
NA
NA
NA
W/m-K
At a Point and in the GUI Display Window
Heat Capacity
NA
NA
NA
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
J
At a Point and in the GUI Display Window
Total Internal Energy
Total Internal Energy
Ht_
NA
J/kg
Same
Total Temperature
Total Temperature
Tt_
NA
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
Boundaries and Interfaces
Mass Avg. Tot. Enthalpy
Mass Avg. Tot. Enthalpy
Tt_m
J/kg
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
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
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.