A cylindrical plug, 120mm long with a diameter of 95 mm, slides concentrically in a fixed cylinder with an internal diameter of 95,2 mm. The radial clearance is filled with oil with a viscosity of 0.2 Pa.s Calculate the Force required to slide the plug along the cylinder at a speed of 5 m/s against the viscous resistance of the oil, the power lost due to the viscous resistance and the Kinematic viscosity of the oil if its density is 850 kg/m 3 .
3.1 A cylindrical plug, 120mm long with a diameter of 95 mm, slides concentrically in a fixed cylinder
with an internal diameter of 95,2 mm. The radial clearance is filled with oil with a viscosity of 0.2 Pa.s
Calculate the Force required to slide the plug along the cylinder at a speed of 5 m/s against the viscous
resistance of the oil, the power lost due to the viscous resistance and the Kinematic viscosity of the oil if
its density is 850 kg/m 3 .
A pressure intensifier is used in reverse deboost the pressure in a hydraulic system from 15MPa to
7MPa. The volume of fluid required in the low pressure side is 700ml and the length of the stroke of the
piston is to be half the diameter of the low pressure piston. Calculate the diameters of the high-pressure
and low pressure sides as well as the stroke length of the piston.
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