Dirk Hartmann, Herman van der Auweraer

We live in a world of exploding complexity with enormous challenges. Digital twins, tightly integrating the real and the digital world, are a key enabler for decision making in the context of complex systems.  While the digital twin has become an intrinsic part of the product creation process, its true power lies in the connectivity of the digital representation with its physical counterpart.

To be able to use a digital twin in this context, the concept of executable digital twins has been proposed. An executable digital twin is a stand-alone and self-contained executable model for a specific set of behaviors in a specific context. In this presentation, we review the concept of executable digital twins, address mathematical key building blocks such as model order reduction, real-time models, state estimation, and co-simulation and detail its power along a few selected use cases.