Table 2.
Results from simulations with periodic sinusoidal wall motion (60 < R < 120) and skewed sinusoidal wall motion (40 < R < 60), both with the same time period (T=3.2 s) and unsteady inlet velocities. Differences between axial wall shear stress and Poiseuille were averaged over time for these unsteady cases
Wall Motion | Inlet Velocity (mm/s) | Axizl Wall Shear Stress (dynes/cm2) | Poiseuille Shear Stress (dynes/cm2) | Max. |Vr/Va| Ratio | Avg. % Diff WSS | Max. % Diff WSS |
---|---|---|---|---|---|---|
Periodic 60 < R < 120 | −1.9 < vinlet < 1.9 | −0.12 < τw < 0.81 | −0.12 < τpoiseuille < 0.81 | 1.36 | 0.4% | 1.4% |
Periodic 60 < R < 120 | −7.5 < vinlet < 7.5 | −0.38 < τw < 2.96 | −0.39 < τpoiseuille < 2.97 | 0.86 | 0.7% | 2.0% |
Periodic 60 < R < 120 | −15 < vinlet < 15 | −0.80 < τw < 5.94 | −0.81 < τpoiseuille < 5.97 | 0.58 | 0.8% | 2.0% |
Skewed 40 < R < 60 | −1.9 < Vinlet < 1.9 | −0.80 < τw < 3.34 | −0.80 < τpoiseuille < 3.35 | 0.095 | 0.2% | 0.5% |