Drag Reducing Polymer in Helicoidal Flow.
Abstract
A novel flow configuration was explored for the study of the behavior of drag reducing polymers. A screw pump consisting of a smooth culinder and a concentrically placed screw was used to create strongly three dimensional but essentially laminar flow. In the first phase of the study, the static pressure head developed by the screw pump was measured as a function of polymer concentration (polyox 10 to 100 ppm). A large increase of the developed head was observed that behaved in an analogous manner to drag reduction as far as concentration, aging, and straining was concerned. In the second phase of the study a new apparatus was constructed and additional parameter of a superimposed through flow was included and the degree of failure of the superposition principle was established.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 19, 1975
- Accession Number
- ADA013088
Entities
People
- Jing Tzong Kuo
- Leslie S. G. Kovasznay
Organizations
- Johns Hopkins University