Three-Port Parallel Junction

In an example of three connecting tubes, the model would require three digital waveguides and a 3-port parallel junction to simulate the point at which they connect.

Figure 10: Three digital waveguides meeting at a three-port parallel junction.

Figure 11: Three-Port Parallel Junction.

The model of the three-port parallel junction will receive an incoming pressure wave, $p_n^{+}$, on each of the three ports, and will return the corresponding outgoing pressure value,

$$p_n^{-} = p_J - p_n^{+}.$$