Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published June 3, 2014 | Submitted
Report Open

Cavitating Flows


There are very few differences between the fluid dynamics of liquids and gases. The viscosity of water, for example, is 10^-2 poise at 20° C while the viscosity of air at this temperature is about 2 X 10^-4 poise. The kinematic viscosity of water is 10^-2 cm^2/sec compared with 0.15 cm^2/sec for air. As one would expect from simple kinetic theory, the viscosity of gases increases with increasing temperature; the viscosity of liquids on the other hand decreases rather rapidly as the temperature rises. While the speed of sound in water is about four times that in air, there is a more interesting consequence of the equation of state. A pressure pulse with an intensity of several hundred psi, which propagates as a strong shock in air, will propagate acoustically in water with a negligible production of entropy.

Additional Information

Office of Naval Research Department of the Navy Contract N00014-67-0094-0009. Report No. 85-46.

Attached Files

Submitted - Report_No._85-46.pdf


Files (7.2 MB)
Name Size Download all
7.2 MB Preview Download

Additional details

August 19, 2023
October 26, 2023