Accession Number : AD0700257

Title :   TEARING SEPARATION OF VISCOUS FLUID LAYERS UNDER SURFACE TENSION MEMBRANE BOUNDARIES.

Descriptive Note : Technical rept.,

Corporate Author : STANFORD UNIV CALIF DEPT OF APPLIED MECHANICS

Personal Author(s) : Goodier,J. N. ; Williamson,A. S.

Report Date : DEC 1969

Pagination or Media Count : 142

Abstract : The slow flow of a viscous fluid is examined when a layer of fluid branches, or is torn, about a surface tension membrane. The solution of this flow requires the determination of the position of the surface tension membrane. The report describes a numerical method which is used to solve the flow between two counter-rotating rollers which are partially immersed in a large bath of viscous fluid. The results obtained are in close agreement with the available experimental evidence. These results are applied to a closely related problem in which two flexible tapes, bonded by a layer of viscous adhesive, are peeled apart around cylindrical guides. A simplified analytical model is also examined in which a 'knife edge' placed between the rollers induces separation of the viscous layer. (Author)

Descriptors :   (*ROLLER BEARINGS, LUBRICATION), (*LUBRICANTS, *FLOW SEPARATION), ROTATION, MEMBRANES, COANDA EFFECT, BOUNDARY LAYER, VISCOSITY, SHEAR STRESSES, THESES, INTERFACIAL TENSION

Subject Categories : Lubricants and Hydraulic Fluids
      Machinery and Tools
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE