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At the inflow aorta cross‐section, a fully developed parabolic flow is assumed, determined by a selected volume flux. The normal stress and tangential stress are set to be equal to zero (stress‐free condition) or they are prescribed at the outlet cross‐section.

It is assumed that the entering flow is pulsatile, with a typical waveform shown in Figure 1.6 [127]. As described in the software menu, the waveform can be changed.

Figure 1.6 A typical in‐flow waveform at the aorta entry. Q is the volumetric in‐flux and t/T is the relative time with respect to the cycle period T.