Parameters | Perfect valve | Diameter test | Stiffness test | Distribution test | Length test | Location test | ||||
---|---|---|---|---|---|---|---|---|---|---|
Diameter (cm) | 1.2 | 0.8 | 1.6 | 1.2 | 1.2 | 1.2 | 1.2 | |||
Length (m) | 1 | 1 | 1 | 1 | 0.50 | 0.75 | 1 | |||
Young's modulus (kPa) | 1000 | 1000 | 500 | 2000 | 1000 | 1000 | 1000 | |||
Poisson's ratio | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | ||||
Blood viscosity (mPas) | 4 | 4 | 4 | 4 | 4 | 4 | ||||
Blood density (Kgm -3 ) | 1000 | 1000 | 1000 | 1000 | 1000 | 1000 | ||||
Gravity application time (s) | Near instantaneous | Near instantaneous | Near instantaneous | Near instantaneous | Near instantaneous | Near instantaneous | ||||
Valve distribution | One | One | One | Two | One | One | ||||
Valve location from inlet (m) | 0.5 | 0.5 | 0.5 | 0.25 and 0.75 | 0.5 | 0.25 | 0.75 | |||
Valve performance | Perfect | Perfect | Perfect | Perfect | Perfect | Perfect | ||||
First peak (mmHg) | 60.2 (8.01 kPa) | 66.3 (8.81 kPa) | 56.8 (7.55 kPa) | 56.3 (7.48 kPa) | 63.2 (8.4 kPa) | 32.6 (4.34 kPa) | 33.2 (4.41 kPa) | 46.8 (6.23 kPa) | 32.6 (4.33 kPa) | 87.2 (11.6 kPa) |
Second peak (mmHg) | 81.9 (10.9 kPa) | 114.3 (15.2 kPa) | 74.9 (9.97 kPa) | 74.6 (9.92 kPa) | 95.5 (12.7 kPa) | 55.6 (7.39 kPa) | 55.9 (7.44 kPa) | 57 (7.58 kPa) | 99.3 (13.2 kPa) | 90.2 (12 kPa) |
Maximum pressure (mmHg) | 93.3 (12.4 kPa) | 115.8 (15.4 kPa) | 89.5 (11.9 kPa) | 90.9 (12.1 kPa) | 104.5 (13.9 kPa) | 92.9 (12.36 kPa) | 57.2 (7.61 kPa) | 77.5 (10.31 kPa) | 110.5 (14.7 kPa) | 105.3 (14 kPa) |
Dynamic pressure ratio | 1.25 | 1.47 | 1.22 | 1.21 | 1.41 | 1.25 | 1.53 | 1.39 | 1.49 | 1.41 |
Valve closed time (s) | 0.17 | 0.11 | 0.19 | 0.26 | 0.11 | 0.09 and 0.17 | 0.06 | 0.11 | 0.16 | 0.15 |
Maximum collapse (%) | 20.2 | 3.64 | 24.5 | 48.2 | 6.06 | 35.6 | 3.58 | 10.6 | 3.25 | 42.3 |
Maximum expansion (%) | 9.89 | 12.1 | 9.87 | 21.2 | 5.41 | 9.89 | 5.92 | 7.19 | 11.9 | 11.5 |