The right ventricular assist device (RVAD) is a Centrifugal Blood Pump (CBP) that produces a continuous flow. The CBP (described in the "Continuous Flow Pump" section) takes blod from the right ventricle and eject it into the pulmonary artery. The open loop network consists of: atrial reservoir (preload), right ventricle and pulmonary arterial tree composed of main, small, arteriole and capillary compartments. Rpam, Cpam and Lpam are the resistance, compliance and inertance describing the behavior of the main pulmonary artery bed. Rpas (Rpac), Cpas (Cpac) and Lpas (Lpas) are the resistance, compliance and inertance describing the behavior of the small pulmonary artery (pulmonary arteriole and capillary) compartment. RAP is the right atrial pressure, RVP is the right ventricular. TV is the tricuspid valve and PV is the pulmonary valve. TV and PV are modelled using resistances and diodes. To reproduce the valve regurgitation two resistances are used: Rri and Rinv (Rro and Rinv) for tricuspid (pulmonary) valve. Rap is the pulmonary arterial peripheral (variable) resistance. Qri (Qro) is the input (output) right ventricular flow. The behavior of the native ventricle is implemented as reported in "Numerical Hart Model (1)" section.