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RESEARCH PAPERS

Behavior of Liquid Sodium in a Sinusoidal Pressure Field

[+] Author and Article Information
R. E. Nystrom

Naval Ship Research and Development Laboratory, Panama City, Fla.

F. G. Hammitt

Cavitation and Multiphase Flow Laboratory, Department of Mechanical Engineering, University of Michigan, Ann Arbor, Mich.

J. Basic Eng 92(4), 671-678 (Dec 01, 1970) (8 pages) doi:10.1115/1.3425101 History: Received February 24, 1970; Online October 27, 2010

Abstract

Utilizing an ultrasonic vibratory cavitation facility, the onset of cavitation was observed in liquid sodium for different liquid sodium temperatures and at various sinusoidal pressure field frequencies. It was observed that the pressure oscillation required to initiate cavitation decreases linearly as the temperature of the sodium is increased from 500 to 1500 deg F. For frequencies below 20 kHz the cavitation threshold pressure amplitude is essentially independent of frequency. For frequencies above 20 kHz the cavitation threshold begins to increase sharply. Using the onset of cavitation data and the saturation temperature-pressure data for liquid sodium, the superheat required to produce nucleate boiling in liquid sodium was calculated. As the saturation temperature of liquid sodium is increased the calculated superheat decreases. For frequencies below 20 kHz the calculated sodium superheat requirements, which are independent of frequency, are in good agreement with steady-state sodium superheat data reported in the literature.

Copyright © 1970 by ASME
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