by colancto » 20 March 2013, 10:40
I remember using such an approach with ProSim Plus a long time ago, like 15 years ago. You may create a sense of dynamic by moving from one loop iteration to another but it is easy to make mistakes especially since the time constants of each block have to be carefully evaluated. There is no time step you may easily set and you have to relate loop iteration to time step, making sure the time step and the time constants of each model are consistent. Even if dynamic simulation is not yet a very current practice, it has made good progress with such tools as INDISS Plus, Dynsim, Aspen Dynamics, gPROMS and so on. CAPE-OPEN has been looking into standardizing what is a dynamic Unit Operation and this has been prototyped in INDISS Plus. We need however to progress some more in that direction.