Accession Number:

AD0632695

Title:

STUDY OF THE SURFACE FILMS OF GAS NUCLEI(AS RELATED TO CAVITATION AND TENSILE STRENGTH IN WATER). PART 2.

Descriptive Note:

Final rept., Jan 65-Dec 66,

Corporate Author:

GENERAL ELECTRIC CO SCHENECTADY N Y RESEARCH AND DEVELOPMENT CENTER

Personal Author(s):

Report Date:

1966-01-01

Pagination or Media Count:

50.0

Abstract:

Cavitation produces gas nuclei in water. Trace materials in the water produce surface films about nuclei. Certain films prevent dissolving of nuclei and the acquisition of tensile strength. Conversely, the absence of films makes for rapid dissolving and the acquisition of tensile strength. Tensile strength is undesirable and leads to errors in cavitation testing. Water from various test facilities was therefore tested for film formation to determine the likelihood of acquiring tensile strength. Most of the water was found to have negligible film formation, and rapidly acquired tensile strength after cavitation. Various protein and hydrocarbon materials were used to produce surface films about nuclei to investigate film action, and find materials suitable for controlling dissolving. It was found possible by this means to produce water that ranged from no tensile strength gain after cavitation, to varying degrees of dissolving and tensile strength gain. It was found possible to match the various waters. Author

Subject Categories:

  • Physical Chemistry
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE