Simulation is the imitation of the operation of a real-world process or system over time. The act of simulating something first requires that a model be developed; this model represents the key characteristics or behaviors of the selected physical or abstract system or process. The model represents the system itself, whereas the simulation represents the operation of the system over time.

Simulation is used in many contexts, such as simulation of technology for performance optimization, safety engineering, testing, training, education, and video games. Training simulators include flight simulators for training aircraft pilots to provide them with a lifelike experience. Simulation is also used with scientific modelling of natural systems or human systems to gain insight into their functioning. Simulation can be used to show the eventual real effects of alternative conditions and courses of action. Simulation is also used when the real system cannot be engaged, because it may not be accessible, or it may be dangerous or unacceptable to engage, or it is being designed but not yet built, or it may simply not exist .

Key issues in simulation include acquisition of valid source information about the relevant selection of key characteristics and behaviours, the use of simplifying approximations and assumptions within the simulation, and fidelity and validity of the simulation outcomes.

Noun

simulation (plural simulations)

1. Something which simulates a system or environment in order to predict actual behaviour.

   This exercise is a simulation of actual battle conditions.

   The most reliable simulation predicts that the hurricane will turn north.

2. The process of simulating.

   Despite extensive simulation in the design phase, the aircraft failed to behave as expected.

3. (soccer) the act of falling over in order to be awarded a foul, when a foul hasn't been committed.

Related terms

• simulate

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Games: Video Games: Simulation: God Games: Sim Games:
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