A Study on the Characteristics of Flow with Polymer Additives

고분자물질 첨가에 의한 유동특성에 관한 연구

  • 차경옥 (명지대학교 기계공학과) ;
  • 김재근 (명지대학교 대학원 기계공학과)
  • Published : 1996.05.01

Abstract

The phenomena of drag reduction using small quantities of a liner macromolecules has attracted the attention of many experimental investigations. On the other hand drag reduction in two phase flow can be applied to the transport of crude oil, phase change system such as chemical reactor, pool and boiling flow, and to flow with cavitation which occurs pump impellers. But the research on dragreduction in two phase flow is not sufficient. The purpose of the present work is to evaluate the drag reduction by measuring pressure drop, void fraction, mean liquid velocity and turbulent intensity whether polymer additives a horizontal single and two phase system or not. Flow pattern of air-water two phase flow was classified by electrical conductivity probe signal. Velocities and turbulent intensities of signal were measured simultaneously with a Hot-film anemometer.

Keywords

References

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