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What
Simulation modeling is a proven problem-solving methodology for analyzing large and complex systems. The technology involves creating a computer model that mimics the operation of a real-world process system over time. The model can then be used to understand, analyze, and predict the system's behavior under a wide variety of conditions.

Why
Simulation models allow you to evaluate the design of a new system without building it or investigate the potential changes to an existing system without disturbing it. Models allow you to compare new concepts, systems, or equipment prior to purchasing. They also allows exploration of complex interactions inherent in large systems, providing a quantitative means of evaluation.

How
Simulation models are created with specialized computer software that mimics the dynamic behavior of the simulated system over time. These models record detailed performance measures representing the results of that behavior. By analyzing this data, inferences can be drawn concerning the operation of the real system.

When
Simulation modeling can be an invaluable tool when you want to:

• Visualize and understand a proposed facility layout
• Answer "what-if" questions about an existing system
• Demonstrate the effectiveness of new design approaches
• Explore the implications of operational changes
• Investigate the sensitivity of the system to variable conditions