A HYBRID STRATEGY FOR DYNAMIC PROCESS FLOWSHEETING

This paper focuses on a method to simulate dynamic models of chemical processes. Such models are usually sparse and stiff and the method in question splits the system into fast and slow modes before using an im plicit integration method for the fast modes in the system and an expl icit method for the slow modes. The splitting is achieved by analyzing the system and includes finding a suitable dimension for the fast mod es and doing transformations on the system to obtain the best performa nce for the integrator when integrating the total system. Numerical ex periments on a simple process model are done to illustrate the methods principles. (C) 1998 Elsevier Science Ltd. All rights reserved.