This study extends existing data on the frictional drag reducing influence
of long-chain polymers in dilute water solutions. Studies were conducted
with both fresh and sea water in capillary tubes and pipes with a size
range of 100 diameters and covering the laminar, transition, and turbulent
regimes with N↑Re up to 8 x 105. Fifteen types of test additives were used,
including Polyhall, Polyox, Westco Guar, and fish slime. Test temperatures
ranged from 40° to 85° F.
Dilute solutions ranging down to 10 ppm concentration exhibited remarkable
friction reductions at high shear rates as a near-laminar type of flow.
Data correlation was hampered by diameter, temperature, and concentration effects
not resolved by existing flow parameters based on power law theory.
Shear degradation effects were evaluated.
Ripken, John F.; Pilch, Meir.
Non-Newtonian Pipe Friction Studies with Various Dilute Polymer Water Solutions.
St. Anthony Falls Laboratory.
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