Computational Fluid Dynamics, CFD

The simulation of air and fluid flows. For example, simulating the flow of water through a hydroelectric turbine or the flow of air over a car or jet in motion. A simulation here may involve inputs like a physical model of the object being simulated along with specifications of different initial physical conditions, which are then iterated over time according to certain CFD equations to produce a completed simulation that can usually be replayed visually through some kind of graphical interface. In HPC, CFD is typically an MPI-based workload, as the simulations involve the same space of calculations—i.e., the workload revolves around computing how all the physical forces in the simulation interact with each other at once.