Parameters

Values

The weight of the piston and moving coil,

1.2 ´ 10−1 kg

The bulk modulus of elasticity of the drug,

2.18 ´ 109 Pa

The initial length of liquid,

2.8 ´ 10−2 m

The cross-sectional area of the micro orifice,

4.91 ´ 10−8 m2

The cross-sectional area of the piston,

1.79 ´ 10−5 m2

Thediameter of the chamber in ampoule,

4.77 ´ 10−3 m

The initial density of the drug,

1 ´ 103 kg/m3

The friction coefficient between ampoule and piston,

2 ´ 10−2

The conventional hydraulic pressure,

3.5 ´ 106 Pa

The contact width between the ampoule and piston,

1 ´ 10−3 m

The dynamic viscosity of the drug,

1.005 ´ 103 Pa∙s