Water Hammer Demonstration Unit.
Water Hammer Demonstration Unit
The apparatus is designed to demonstrate
shock waves in water at sonic velocity. Closing the pneumatic valve
causes the pressure to rapidly attain a theoretical value and remain
practically constant as the shock wave travels the length of the pipe,
returning to the transducer as a negative pressure wave.
The time required for the positive pressure wave to travel through the pipe is used to calculate the speed of sound in water. When the pressure attains the vapour pressure of the water in the conduit, it causes cavitation.
The Water Hammer Demonstration Unit comprises: