The Mechanisms of the Effect of Dissolved Macromolecules on Turbulent Friction,
Abstract
The decrease in the turbulent friction in non-Newtonial liqs. was determined as a function of the physical properties of the dissolved molecules and of the hydrodynamic conditions (particularly Reynolds No.). Data obtained from solutions of synthetic polymers (e.g., CM-cellulose and poly(vinyl alc.)) or bio-polymers (e.g., polysaccharides and fish slime) suggested that a decrease in the turbulent friction was dependent on the rheological constants of the solution and its concentration. The effects of the dissolved macromolecules on the turbulent friction in non-Newtonian liquids was interpreted in terms of an anisotropic viscosity hypothesis. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 22, 1970
- Accession Number
- AD0722286
Entities
People
- G. F. Kobets
Organizations
- National Air and Space Intelligence Center