Computer Aided Modelling of Dynamic Processes Based on Elementary Physics

Abstract This paper presents an automated approach for establishment of dynamic state space models for unit processes. Typical examples of such unit processes are separators, heat exchangers and various reactors. The emphasis is put on processes where the behaviour is dominated by phenomena like fluid flows, phase shifts and chemical reactions. A rule based computer program prototype has been developed to perform the modelling task, including selecting conservation equations, identifying possible transfer phenomena and expressing transfer phenomena mathematically. An example demonstrating the modelling of an evaporator is included.