Solar Energy (태양에너지)

The Korean Solar Energy Society (한국태양에너지학회)
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Experimental Study on Drag Reduction Effect of PEO in Turbulent Flow

난류유동에서 PEO가 마찰저항 감소효과에 미치는 영향에 대한 실험적 연구

  • Chun, W.G. (Department of Nuclear & Energy Engineering, Cheju National University) ;
  • Kim, S. (Department of Nuclear & Energy Engineering, Cheju National University) ;
  • Lee, B.A. (Department of Nuclear & Energy Engineering, Cheju National University) ;
  • Choi, H.J. (Department of Polymer Science & Engineering, Inha University) ;
  • Kim, C.A. (Department of Polymer Science & Engineering, Inha University)
  • 천원기 (제주대학교 에너지공학과) ;
  • 김신 (제주대학교 에너지공학과) ;
  • 이보안 (제주대학교 에너지공학과) ;
  • 최형진 (인하대학교 고분자공학과) ;
  • 김철암 (인하대학교 고분자공학과)
  • Published : 1999.03.31
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Abstract

As polymer added in flow, the phenomenon of drag reduction effect was found by many experiments and studies. We divided polymer into three molecular weight($2{\times}10^5,\;4{\times}10^5,\;5{\times}10^5$) and into four concentration(1, 5, 10, 20wppm), then we measured the drag reduction effect in the range Reynolds Number with $30000{\sim}60000$. Finally we found that the most effect drag reduction was that molecular weight is $2{\times}10^5$ with 10wppm concentration. Then the concentration was according to PEO molecular weight, and in general DR increase according to Reynolds Number.

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