When analyzing aerodynamic performance, assessing the drag as it accumulates on the surface can be a useful way to determine the regions of the vehicle which are contributing to the drag. With a simple Python macro which utilizes the ability to loop repeatedly over a series of commands, EnSight can be used to easily calculate the cumulative drag as a function of length down the vehicle. This tutorial illustrates how this macro is used, along with the automatic generation of the cumulative drag graph.
The tutorial and python script can be found on this page: http://www.ensight.com/Graphing-and-Plotting-Tutorials/
More plotting examples are here: https://vimeo.com/album/3799378
ensightgraphdragaerodynamic analysiscfdautomotivecumulative drag
From Darin images