Accession Number:

AD0657580

Title:

THE PRESSURE DROP ACROSS CURVED INTERFACES.

Descriptive Note:

Special rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

Report Date:

1967-07-01

Pagination or Media Count:

14.0

Abstract:

The analysis of a general mathematical equation derived for the pressure drop across a curved interface indicates a valid result as long as the thickness of the interfacial region is small compared to its radius of curvature. However, if the interfacial region is within the range of surface forces, the value of the interfacial tension to be used in the equation may not be that identified with the interface between corresponding bulk phases. Further, if surface forces influence the phases in question, then it cannot be assumed that capillary rise and other associated phenomena are due only to pressure differences across curved interfaces. Also, it cannot be assumed that the curvature of the air-solution interface is controlled entirely by the shape of the capillary. Author

Subject Categories:

  • Physical Chemistry
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE