Table 2 Comparison of the flow properties (minimum, mean and maximum values) between CFD and Womersley’s solution
From: An in vitro test bench reproducing coronary blood flow signals
Viscosity μ (Pa s) | Flow rate Q (m3/s) | WSS τ (Pa) | WSSTD dτ/dt (Pa/s) | |||||
|---|---|---|---|---|---|---|---|---|
CFD | Womersley | CFD | Womersley | CFD | Womersley | CFD | Womersley | |
Patient 1 | ||||||||
Min | 3.11 × 10−3 | 3.42 × 10−3 | 5.64 × 10−8 | 2.62 × 10−8 | −0.42 | −0.41 | −52.31 | −50.10 |
Mean | 3.42 × 10−3 | 3.42 × 10−3 | 8.62 × 10−7 | 8.14 × 10−7 | 0.78 | 0.73 | 0 | 0 |
Max | 9.56 × 10−3 | 3.42 × 10−3 | 1.62 × 10−6 | 1.54 × 10−6 | 1.51 | 1.51 | 75.075 | 72.22 |
Patient 2 | ||||||||
Min | 2.89 × 10−3 | 3.09 × 10−3 | 8.86 × 10−8 | 7.45 × 10−8 | −0.27 | −0.28 | −63.41 | −53.35 |
Mean | 3.09 × 10−3 | 3.09 × 10−3 | 6.08 × 10−7 | 5.86 × 10−7 | 1.19 | 1.15 | 0 | 0 |
Max | 5.12 × 10−3 | 3.09 × 10−3 | 1.04 × 10−6 | 1.00 × 10−6 | 2.15 | 2.17 | 81.50 | 83.73 |
Patient 3 | ||||||||
Min | 3.62 × 10−3 | 3.85 × 10−3 | 9.32 × 10−8 | 8.62 × 10−8 | 0.42 | 0.31 | −25.90 | −23.53 |
Mean | 3.85 × 10−3 | 3.85 × 10−3 | 3.02 × 10−7 | 2.92 × 10−7 | 1.47 | 1.41 | 0 | 0 |
Max | 4.53 × 10−3 | 3.85 × 10−3 | 5.43 × 10−7 | 5.29 × 10−7 | 2.58 | 2.59 | 51.96 | 51.88 |
Patient 4 | ||||||||
Min | 3.00 × 10−3 | 3.11 × 10−3 | 3.19 × 10−7 | 3.03 × 10−7 | 0.73 | 0.83 | −24.91 | −25.75 |
Mean | 3.11 × 10−3 | 3.11 × 10−3 | 6.88 × 10−7 | 6.67 × 10−7 | 1.89 | 1.98 | 0 | 0 |
Max | 3.33 × 10−3 | 3.11 × 10−3 | 1.20 × 10−6 | 1.15 × 10−6 | 3.35 | 3.43 | 49.30 | 48.93 |
Patient 5 | ||||||||
Min | 3.55 × 10−3 | 3.69 × 10−3 | 1.52 × 10−7 | 1.44 × 10−7 | 0.22 | 0.14 | −81.80 | −74.18 |
Mean | 3.69 × 10−3 | 3.69 × 10−3 | 4.89 × 10−7 | 4.74 × 10−7 | 1.89 | 1.82 | 0 | 0 |
Max | 5.31 × 10−3 | 3.69 × 10−3 | 7.64 × 10−7 | 7.46 × 10−7 | 2.91 | 2.90 | 89.56 | 83.34 |