Flow animation is an alternative to displaying results at one particular time. Distributions during flow animation are displayed continuously at consecutive times, thereby visualizing the flow and transport process. Note, however, that display times are defined by the print time intervals specified in the input data file. This means that the print times must be at constant intervals so that the time scale of the flow animation will not be distorted. In other words, undistorted flow animation requires that the print time intervals be constant. The speed of the flow animation depends on the hardware being used, i.e., the speed of the microprocessor and the graphical card.