The Unsteady Flow Cavitation Tunnel at the California Institute of Technology

In the Blow-down Water Tunnel at the California Institute of Technology, velocities of the order of 100 ft / sec are readily obtainable in a 2-3/ 4-in. square working section. The apparatus is described and several of its features which make it particularly suitable for cavitation studies are emphasized. Operation is automatic and a device is described whereby the controls may be preset to yield a desired combination of tunnel static pressure and velocity.