Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Simultaneous Measurement of Velocity and Temperature Fields in Micro-Scale Flow and Its Application to Electrokinetic Flow

마이크로 스케일 유동에서의 속도장 온도장 동시 측정 기법과 동전기 유동에의 적용

  • 이범준 (서울대학교 기계항공공학부) ;
  • 진송완 (서울대학교 기계항공공학부) ;
  • 김영원 (서울대학교 기계항공공학부) ;
  • 유정열 (서울대학교 기계항공공학부, 서울대학교 정밀기계설계공동연구소)
  • Published : 2007.07.01
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Abstract

In this paper, a technique of simultaneously measuring the velocity and the temperature in micro-scale flow is proposed. This method uses particle tracking velocimetry (PTV) for measuring the velocity and laser induced fluorescence (LIE) for measuring the temperature. To measure the accurate velocity and temperature, images for PTV and for LIE are separated by using two light sources and a shutter which is synchronized with a camera. By using only one camera, measurement system can be simplified and the error from complicate optical system can be minimized. Error analyses regarding the concentrations of fluorescent dye and particle and the light source fluctuation are also conducted. It is found that the error of the temperature and the velocity highly depends on the concentration of fluorescent particles which are used for PTV. This technique is applied to the simultaneous measurement of the velocity and the temperature in the electrokinetic flow. It is found that the velocity and temperature vary with the electric field strength and the concentration of electrolyte.

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References

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