P. Holl

DIVA : an open architecture for dynamic simulation

Abstract During 3 yr of application of the dynamic flowsheet simulator DIVA, existing features have been extended and new capabilities have been added. This expansion leads to an improved open architecture for the dynamic simulation environment. Interfaces are developed for interactive communication with the user during all stages of the simulation. A graphical flowsheet editor is used to define the simulation problem. The execution of a simulation problem is organized in separately operable tasks including the simulator, system theoretical methods, a graphic utility and a post processor. For real-time application a data management system and a real-time process interface are implemented. Communication among all tasks is divided into a command transfer level and a process database.

DIVA: a powerful tool for dynamic process simulation

Abstract A program for dynamic simulation of chemical plants is presented. The dynamic plant equations and the corresponding Jacobian matrix are generated automatically. The full exploitation of sparse matrix techniques in combination with stiff ODE solvers allows an efficient solution of all equations in parallel.

Dynamic Process Flowsheet Simulation - An Important Tool in Process Control

Abstract Comfortable tools for control system design and evaluation have gained increasing importance as useful aids in academia and industry. The limited nonlinear simulation capabilities of existing control system design packages are not sufficient for process and control system simulations. The development of detailed dynamic flowsheet simulators and their integration in a computer-aided design (CAD) environment is required for that purpose. The outline of the general purpose dynamic flowsheet simulator DIVA (Dynamische Simulation verfahrenstechnischer Anlagen), which is currently being developed at Universitat Stuttgart is presented below. An illustrative simulation example of a chemical production plant will demonstrate the function and the possibilities offered by the simulator.