Node & Cavity

The Node serves as a pivotal component in circulatory models, playing a central role in the system. The pressure within a node is determined by the interplay of flow (\(q\)) and wave impedance (\(Z\)).

When the node is characterized as a Cavity, an additional factor comes into play – the transmural pressure (\(p_{trans}\)). In such cases, the total pressure (\(p\)) is a composite of the transmural pressure and the flow-to-impedance ratio. The transmural pressure \(p_{trans}\) is a result of the stress in the wall around the cavity volume \(V\). This can be handled by the Cavity itself, e.g. in the Tube0D or Chamber2022, but can also be set by an external component, e.g. the TriSeg2022.

The mathematical representation is expressed by the equation:

(1)\[p = p_{trans} + \frac{q}{Z}\]

The Cavity is derived from the Node and has no other derived modules. The following objects are derived from the Cavity: