This paper presents a visual environment for building process simulators which is specifi cally aimed at integrating the construction of a model and the organization of the corre sponding simulation code, providing the user with easy and extensive control of both phases. The environment relies entirely on a graphical programming language, which permits easy creation of flexible and effective user interfaces for the simulators. It adopts a modular approach, so as to simplify its maintenance and extension. A real-size case is treated to demonstrate the capacity of the proposed environment.
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