Table 1 Material and fluid properties for centrifugal pump analysis

Stainless steel

Density ρ _m/(kg·m^–3)

7850

Young’s modulus Y _m/GPa

210

Poisson’s ratio v _m

0.30

Water

Density ρ _l/(kg·m^–3)

998.2

Kinematic viscosity γ _l/(kg·(m·s)^–1)

0.001

Air

Density ρ _a/(kg·m^–3)

1.225

Kinematic viscosity γ _a/(kg·(m·s)^–1)

1.79 × 10^-5

Density ρ _p/(kg·m^–3)

7500

Relative permittivity ε ^S₁₁

730

Relative permittivity ε ^S₃₃

635

Piezoelectric constant e ₃₁/(C·m^–2)

-5.2

Piezoelectric constant e ₃₃/(C·m^–2)

15.1

PZT-4

Piezoelectric constant e ₁₅/(C·m^–2)

12.7

Stiffness c ^E₁₁ /(GN·m^–2)

139

Stiffness c ^E₁₂ /(GN·m^–2)

77.8

Stiffness c ^E₁₃ /(GN·m^–2)

74.3

Stiffness c ^E₃₃ /(GN·m^–2)

115

Stiffness c ^E₄₄ /(GN·m^–2)

25.6

Stiffness c ^E₆₆ /(GN·m^–2)

30.6