Record Display for the EPA National Library Catalog

RECORD NUMBER: 3 OF 4

OLS Field Name OLS Field Data
Main Title Rotational Stability in Dilute Polymer Solutions.
Author Den, Morton M. ;
CORP Author Delaware Univ., Newark. Water Resources Center.
Year Published 1972
Report Number DI-14-01-0001-1627 ;DI-14-31-0001-3008; OWRR-A-009-DEL; 02874,; A-009-DEL(2)
Stock Number PB-213 626
Additional Subjects ( Turbulent flow ; Polymers) ; ( Vorticies ; Rheology) ; Solutions ; Viscoelasticity ; Skin friction ; Polymers ; Reynolds number ; Couette flow ; Chemical engineering ; Drag ; Transport properties ; Laminar flow ; Viscosity ; Drag reducing fluids
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-213 626 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 11p
Abstract
Dilute aqueous solutions of certain polymers have transport properties which differ considerably from those of pure water. It is shown how engineering estimates of regions where polymer solution elasticity will be important can be made by comparing the shear wave velocity and the relevant kinematical velocity. The transition from laminar shearing flow in plane Poiseuille and rotational Couette geometries is related to solution rheological properties using linear and non-linear stability theory, and verified experimentally for the Couette flow. Torque reduction in the Coutette geometry is explained using a non-linear analysis. Rheological properties in dilute solutions can be estimated from the onset and torque of the secondary flow in the rotational Couette geometry. (Author)