Accession Number:

AD0419568

Title:

EXPERIMENTAL STUDY OF THE USE OF A THIN FLOWING WATER FILM AS A MEANS OF PREVENTING EROSION,

Descriptive Note:

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1963-08-01

Pagination or Media Count:

63.0

Abstract:

Since systems for use in space depend upon reliability and continuous trouble-free operation for extended periods of time, erosion in fluid systems due to cavitation and impingement attack has become a major problem. This study concerns the use of a thin water film flowing parallel to a surface on erosion caused by the impinge ment of another stream of water. Using lead specimens a comparison was made of the weight loss due to erosion with and without the flowing protective film. The film thickness was main tained at 0.022 inches. The total pressure of the film was increased in steps to a maximum obtainable value of approximately 38 of the impinging stream. At this value the weight loss in a 15 minute period was reduced to about 88 of the weight loss with no protective film. The study proved there is some merit to the use of flowing liquid protective films as a means of resisting erosion. There also appears to be a value of p ure ratio where the erosion phenomena may be stopped completely. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE