Table 2 Parameter variation test results

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