Although knowing the basic steps in the simulation study is important, it is equally important to realize that not every problem should be solved using simulation. The best course of action is identified, recommended, and justified.Ĭompleting the required steps of a simulation study establishes the likelihood of the study's success. The results and implications of the study are discussed. Additionally, face validity may be obtained by having the model reviewed and supported by an expert.Įxperimentation involves developing the alternative model(s), executing the simulation runs, and statistically comparing the alternative(s) system performance with that of the real system.ĭocumentation consists of the written report and/or presentation. Validation can be achieved through statistical analysis. Validation ensures that no significant difference exists between the model and the real system and that the model reflects reality. Verification is necessary but not sufficient for validation, that is a model may be verified but not valid. Verification is the process of ensuring that the model behaves as intended, usually by debugging or through animation. Choices range from general purpose languages such as fortran or simulation programs such as Arena. The model is translated into programming language. For example, the arrival rate of a specific part to the manufacturing plant may follow a normal distribution curve. Data is fitted to theoretical distributions. New data is collected and/or existing data is gathered. Creating a flow chart of how the system operates facilitates the understanding of what variables are involved and how these variables interact.Īfter formulating the model, the type of data to collect is determined. Understanding how the actual system behaves and determining the basic requirements of the model are necessary in developing the right model. Often the system is very complex, thus defining the system requires an experienced simulator who can find the appropriate level of detail and flexibility. This step involves identifying the system components to be modeled and the preformance measures to be analyzed. This schedule is necessary to determine if sufficient time and resources are available for completion. Milestones are indicated for tracking progress. The tasks for completing the project are broken down into work packages with a responsible party assigned to each package. Care should be taken to determine if simulation is the appropriate tool for the problem under investigation. The problem is further defined through objective observations of the process to be studied. The initial step involves defining the goals of the study and determing what needs to be solved. The following briefly describes the basic steps in the simulation process : Regardless of the type of problem and the objective of the study, the process by which the simulation is performed remains constant. The application of simulation involves specific steps in order for the simulation study to be successful. Basic Steps and Decisions for Simulation
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