Cavitation Demonstration

Cavitation Demonstration

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This accessory consists of a circular Venturi-shaped test section manufactured from clear acrylic to enable visualization 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 vapor pressure of the liquid.
At this low pressure small bubbles of vapor form then collapse violently as the pressure rises again downstream – a process called cavitations. 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 cavitations to be clearly demonstrated.
Observation of the phenomenon of cavitations in a liquid
Comparison of theoretical and actual pressure at cavitations conditions
Observation of air-release due to dissolved gases in a liquid
Demonstration of reducing cavitations by increasing the static pressure in a liquid

TECHNICAL SPECIFICATIONS:-
Circular Venturi-shaped test section manufactured from clear acrylic for full visualization of cavitations
Three Bourdon gauges indicate the static 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 flow conditions to be optimized for the demonstration of cavitations
Quick-release fitting for easy connection to Hydraulics Bench

Upstream pressure gauge:-
Diameter: 63mm
Range: 0 to 1 bar

Throat vacuum gauge:-
Diameter: 100 mm
Range: -1 to 0 bar

Downstream pressure gauge:-
Diameter: 63 mm
Range: 0 to -1 bar