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 Concentration Field in a Stirred Mixer Using PIV/LIF Technique

PIV/LIF기법에 의한 교반혼합기 내의 속도장과 농도장 동시 측정

  • 정은호 (부산대학교 대학원 기계공학과) ;
  • 윤상열 (부산대학교 대학원 기계공학과) ;
  • 김경천 (부산대학교 기계공학부)
  • Published : 2003.04.01
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Abstract

Simultaneous measurements of turbulent velocity and concentration field in a stirred mixer tank are carried out by using PIV/LIF technique. Instantaneous velocity fields are measured with a 1K$\times$1K CCD camera adopting the frame straddle method while the concentration fields are obtained by measuring the fluorescence intensity of Rhodamine B tracer excited by the second pulse of Nd:Yag laser light. Image distortion due to the camera view-angle is compensated by a mapping function. It is found that the general features of the mixing pattern are quite dependent on the local flow characteristics during the rapid decay of mean concentration. However, the small scale mixing seems to be independent on the local turbulent velocity fluctuation.

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References

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