Investigations on drag reduction in turbulent pipe flows by addition of ionic and nonionic high polymers
Abstract
Drag reduction in turbulent pipe flow is obtained by addition of polymeric flow accelerator. Turbulent flow pattern is described on the basis of existing theories and reduction of loss of pressure heads is discussed. A turbulence rheometer is developed permitting the measurement of friction reduction for Reynolds numbers 1100 to 90,000. Effectiveness of water soluble polymer systems like polyacrylamide and coacrylate is studied in dependence of concentration, chemical composition, product aging and polymer chain deformation.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1987
- Bibcode:
- 1987PhDT........26G
- Keywords:
-
- Drag Reduction;
- High Polymers;
- Pipe Flow;
- Turbulent Flow;
- Fluid Flow;
- Friction;
- Pressure Heads;
- Rheometers;
- Turbulence;
- Fluid Mechanics and Heat Transfer