| 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 |
Checkout
Status |
| NTIS |
PB-213 626 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| 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) |
| NTIS Title Notes |
Completion rept.. |
| PUB Date Free Form |
Aug 72, |
| Category Codes |
20D; 7A; 80F; 59B |
| NTIS Prices |
PC A02/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326535183 |
| Origin |
NTIS |
| Type |
CAT |
