The picture below describes the most typical fluid interfaces to other aspects.

Typical Fluid Interfaces to Other Aspects

We typically use the sim bus to move this data around, and GUNNS links are typically designed assuming that their interfaces will use the sim bus. However, the sim bus is not required and there are other ways to move this data. It is possible to create direct connections between aspects with pointers & references. For example, in one application we built a propulsion system model consisting of fluid, electrical and signal aspects. This application was very timing-sensitive and we couldn’t have the one frame of lag in each interface that the sim bus incurs. So we designed the signal aspect to have references to the fluid and electrical networks, and its effector models (like valve controllers) could set & get values directly to/from the fluid & electrical aspects.

(Supply/demand exchange with another fluid network will be covered later. Then individual pages talking more in-depth about each kind of typical interface)

See also:
Typical aspect breakdown
Sim Bus User's Guide
Big table of common sim bus interfaces by fluid link

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