Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Holographic Microscopy Measurement of Inertia Migration Phenomena of Phytoplankton in Pipe Flows

식물성 플랑크톤의 관유동 내 횡방향 이동현상에 대한 홀로그래픽 실험 연구

  • 임승민 (포항공과대학교 기계공학과 대학원) ;
  • 이상준 (포항공과대학교 기계공학과)
  • Received : 2012.11.08
  • Accepted : 2012.12.05
  • Published : 2012.12.31
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Abstract

Inertial migration phenomena of phytoplankton in pipe flows were investigated using a digital holography technique. As the Reynolds number increases, the microorganisms suspended in a pipe flow are focused at a certain radial position which is called equilibrium position or pinch point. In this study, the effects of the size of microorganism and Reynolds number in the range of 1 < Re < 78 on the inertial migration were investigated and the results are compared with those for solid particles under similar experimental conditions. As a result, the equilibrium position for the elastic microorganisms is not so distinct, compared to the solid particles. This results from deformation of elastic body shape caused by shear-gradient of surrounding flow.

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References

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