An Experimental and Theoretical Investigation of Thermodynamic Effects on Developed Cavitation.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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The results of an experimental and theoretical investigation of thermodynamic effects on developed cavitation are presented. Distributions of temperature and pressure were measured for zero- and quarter-caliber ogives over a wide range of velocities, temperatures and cavity lengths. The semi-empirical entrainment theory is used to correlate the measured temperature depressions in the cavity. This theory relates the maximum temperature depression expressed in dimensionless form as the Jakob number in terms of the dimensionless numbers of Nusselt, Reynolds, Froude, and Peclet, and dimensionless cavity length. The results show that, in general, the temperature depression increases with cavity lengths and temperature.
- Fluid Mechanics