## 16.3. Particle Variables Generated by the Solver

This section describes the following types of particle variables that you may have defined in CFX-Pre or that are available for viewing in CFD-Post and exporting to other files. Many variables are relevant only for specific physical models.

- Particle Track Variables
- Particle Field Variables

Some variables are defined only on the boundaries of the model. When using these variables in CFD-Post, there are a limited number of useful things that you can do with these. For details, see Boundary-Value-Only Variables in the CFD-Post User's Guide.

The following information is given for particle variables described in this section:

- Long Variable Name: The name that you see in the user interface.

- Short Variable Name: The name that must be used in CEL expressions.

- Units: The default units for the variable. An empty entry [ ] indicates a dimensionless variable.

  Note: The entries in the Units columns are SI but could as easily be any other system of units.

- Type (User Level, Boundary)

  User Level: This number is useful when using the CFX Export facility. For details, see File Export Utility in the CFX-Solver Manager User's Guide. Note that the CFX-Solver may sometimes override the user-level setting depending on the physics of the problem. In these cases, the User Level may be different from that shown in the table below.

  Boundary (B): A B in this column indicates that the variable contains only non-zero values on the boundary of the model. See Boundary-Value-Only Variables in the CFD-Post User's Guide for more details.

This section does not cover the complete list of variables. For information on obtaining details on all variables, see RULES and VARIABLES Files in the CFX-Solver Manager User's Guide.

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