An Investigation on Loose Coupling Co-Simulation with the BCVTB

Abstract

This paper introduces several methods of co-operative simulation. Apart from the general classifi-cation and method descriptions, the numerical stability and consistency of one loose coupling approach is dis-cussed. It is shown that consistency is maintained, al-though possibly of lower order, and zero stability per-sists as long as no algebraic dependencies between par-tial systems occur. The methodology of Jacobi-Type loose coupling is applied for a case study using the co-simulation tool BCVTB (see [1]). The study shows that this tool is well suited for the fast co-simulation of many instances of certain simulators, but allows no synchro-nisation step size control and only equidistant synchro-nization step sizes.