http://en.wikipedia.org/wiki/Computational_model computational model mathematical model that requires computer simulations to study the behavior of a complex system. The system under study is often a complex nonlinear system for which simple, intuitive analytical solutions are not readily available. Rather than deriving a mathematical analytical solution to the problem, experimentation with the model is done by adjusting the parameters of the system in the computer, and studying the differences in the outcome of the experiments. weather forecasting models, earth simulator models, flight simulator models, molecular protein folding models, neural network models.