THE PRESSURE DROP ACROSS CURVED INTERFACES.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1967
- Accession Number
- AD0657580
Entities
People
- Philip F. Low
Organizations
- Cold Regions Research and Engineering Laboratory