The postprocessor is the component used to analyze, visualize and present the results interactively. Post-processing includes anything from obtaining point values to complex animated sequences.
Examples of some important features of postprocessors are:
Visualization of the geometry and control volumes
Vector plots showing the direction and magnitude of the flow
Visualization of the variation of scalar variables (variables that have only magnitude, not direction, such as temperature, pressure and speed) through the domain
Quantitative numerical calculations
Animation
Charts showing graphical plots of variables
Hard copy and online output.