This component transports fluid between its multiple inlet and
single outlet ports, without storing mass or energy. Therefore, all
inlet ports ports_a[i] are simply connected with the
outlet port port_b.
This component is required to connect models extending from
PartialModularPort_b or
PartialModularPort_ab with, for example, boundary
models prestended in AixLib.Fluid.Sources. These
models are not directly connectable because the models presented in
AixLib.Fluid.Sources need undefined port sizes and that does not
hold for models extending from PartialModularPort_b or
PartialModularPort_ab.