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Cavitation Demonstration Didactic Equipment Vocational Education Equipment Fluid Mechanics Lab Equipment

Item No.: F1-28
Cavitation Demonstration Didactic Equipment Vocational Education Equipment Fluid Mechanics Lab Equipment
Description
F1-28 Cavitation Demonstration Didactic Equipment Vocational Education Equipment Fluid Mechanics Lab Equipment

DESCRIPTION
This accessory consists of a circular Venturi-shaped test section manufactured from clear acrylic to enable visualisation inside the section.
As the flow of water increases, the pressure at the throat falls in accordance with the Bernoulli equation until a limit is reached corresponding to the vapour pressure of the liquid. At this low pressure small bubbles of vapour form then collapse violently as the pressure rises again downstream.
This process is called cavitation.
Bourdon gauges indicate the pressure upstream of the contraction, inside the throat and downstream of the expansion in the test section. Flow control valves upstream and downstream of the test section enable the flow and pressure to be adjusted, enabling cavitation to be clearly demonstrated.


TECHNICAL SPECIFICATIONS
Upstream pressure gauge
Diameter: 63mm
Range: 0 to 2 bar
Throat vacuum gauge
Diameter: 100mm
Range: -1 to 0 bar
Downstream pressure gauge
Diameter: 63mm
Range: 0 to 1 bar
Requires Hydraulics Bench Service unit F1-10/F1-10-2
EXPERIMENTAL CONTENT
To demonstrate the appearance and sound of cavitation in a hydraulic system
To demonstrate the conditions for cavitation to occur (liquid at its vapour pressure)
To observe the difference between air release from the water and true cavitation
To show how cavitation can be prevented by raising the static pressure of a liquid above its vapour pressure
Verification of Bernoulli’s equation
Comparison of theoretical and actual pressure at cavitation conditions