The act of reproducing the behavior of a process using a model that describes each step of the process is called simulation.
Simulation is the imitation of the behavior of a real process or system over time. Simulation requires the use of models. A model represents the key properties or behavior of a selected system or process, and a simulation represents the evolution of the model over time.
The definition of a simulation is a model or representative example of something. If you are writing a computer program to model the flight of an airplane, this is an example of simulation.
The underlying purpose of simulation is to reveal the underlying mechanisms that control system behavior.
