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Table 2 Main parameters of new wave maker system

From: Simple Push-Type Wave Generating Method Using Digital Rotary Valve Control



Diameter of cylinder (D0)

40 mm

Diameter of piston rod (d0)

28 mm

Volume of cylinder (Vt)

1.28×10−4 m3

Effective action area of hydraulic cylinder (Ap)

6.4×10−4 m2

Axial opening width of rotary valve (xv)

0‒4 mm

Maximum Circumferential width of rotary valve (yvmax)

6.1 mm

Radius of the spool shoulder (R)

8 mm

Number of grooves on a single spool (Z)


Oil supply pressure (ps)

0‒8 MPa

Maximum flow (qsmax)

40 L/min

Equivalent mass of wave plate (mt)

30 kg

Depth of water (d)

400 mm

Flow rate coefficient (Cd)


Oil density (ρ)

870 kg/m3

Effective bulk modulus of oil (βe)

8 × 108 Pa

Density of water

1000 kg/m3

Temperature of water

20 °C