SET Proceedings

2978-4387

Caravel Press

10.65582/set.2008.318

2008.318

Measurement of Drag Reduction in Polymer Added Turbulent Flow

Kim

N. J.

jnkim@cheju.ac.kr Kim

sinkim@cheju.ac.kr Cho

Y. S.

yscho@kier.re.kr Lim

S. H.

shlim@kier.re.kr Makhmudov

imakhmudov@gmail.com Chun

W. G.

wgchun@cheju.ac.kr Department of Nuclear & Energy Engineering, Cheju National University, Cheju, Korea Solar Thermal Research Center, Korea Institute of Energy Research, Taejon, Korea

24082008

7 1 978-1-995850-08-5 2246 2254

24 August 2008

2008

In this study, we used polyethylene oxides as a drag reducing additive. In order to study the effect of concentration and molecular weight of the polymer on the drag reduction, 4 molecular weights (2×10⁵, 4×10⁵, 9×10⁵, 4×10⁶) and 4 concentrations (1, 5, 10, 20 wppm) of PEO were selected for the experiments. Also, the hydraulic conditions were varied from Reynolds number 30,000-60,000. The results are showed that the drag reduction effect rate was more than about 20% for all molecular weights and constructions of PEO within the range investigated in this study, and the maximum drag reduction rate was 50% for 4×10⁶ of molecular weight and 20wppm of concentration. Finally, we obtained the results that the drag reduction effect tends to be higher as molecular weight and Reynolds number increase.

Drag reduction Degradation Additive PEO Polymer

24 to 27 August 2008

7th International Conference on Sustainable Energy Technologies

SET2008

Seoul, Korea

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