20.4 Volume Integration

The volume, sum, maximum, minimum, volume integral, volume-weighted average, mass integral, and mass-weighted average can be obtained for a selected field variable in selected cell zones in the domain.

Example uses of the different types of volume integral reports are given below:

• Volume: You can compute the total volume of a fluid region.

• Sum: You can add up the discrete-phase mass or energy sources to determine the net transfer from the discrete phase. You can also sum user-defined sources of mass or energy.

• Maximum: The maximum value of the selected variable at each cell in the selected zone.

• Minimum: The minimum value of the selected variable at each cell in the selected zone.

• Volume Integral: For quantities that are stored per unit volume, you can use volume integrals to determine the net value (e.g., integrate density to determine mass).

• Volume-Average: You can obtain volume averages of mass sources, energy sources, or discrete-phase exchange quantities.

• Mass Integral: You can determine the total mass of a particular species by integrating its mass fraction.

• Mass-Average: You can find the average value (such as average temperature) in a fluid zone.

For information about how ANSYS FLUENT computes volume integrals, see Section  20.4.1. Otherwise, for more information about generating a volume integral report, see this section in the separate User's Guide.