Accession Number : AD0660429

Title :   EXPERIMENTAL INVESTIGATIONS OF THE SPECTRAL DISTRIBUTION OF THE CAVITATION NUCLEI IN WATER,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Gravrilov,L. R.

Report Date : 13 JUN 1967

Pagination or Media Count : 11

Abstract : A method of measuring the spectral distribution of cavitation nuclei in liquid in the form of gas bubbles is described and the results of tests for determining the number of nuclei in the water supply line are given. The property of gas bubbles to cause absorption of ultrasonic energy propagating in the medium water gas bubbles was established as a means for measuring the spectral distribution of cavitation nuclei. It was also shown that the basic causes of ultrasonic energy absorption were: (1) the transfer of heat from the bubbles to the liquid during periodic changes in volume under the effect of a sound wave, (2) dissipation of a part of the energy, since a bubble of resonance dimensions becomes itself a spherical emitter of sound.

Descriptors :   (*CAVITATION, *WATER), BUBBLES, DISTRIBUTION, MEASUREMENT, ABSORPTION, ULTRASONIC RADIATION, TURBINES, USSR

Subject Categories : Non-electrical Energy Conversion
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE