한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제8권4호
  • /
  • Pages.26-30
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  • 2010
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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하이브리드 PTV-PIV알고리듬에 의한 고정밀 와도 추정

Precise Estimations on Vorticities using a Hybrid PTV-PIV Algorithm

  • 도덕희 (한국해양대 기계정보공학부) ;
  • 조경래 (한국해양대 해양과학기술연구소) ;
  • 이재민 (한국해양대 대학원)
  • 투고 : 2010.11.24
  • 심사 : 2010.12.16
  • 발행 : 2010.12.31
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초록

A PTV algorithm was constructed using a linear transformation, in which the merits of the conventional PIV and PTV were adopted. In PIV calculations, the obtained velocity vectors are affected by the filtering effects by its calculation principle. PTV techniques are widely used for their excellences of measuring small scaled flows, such as nano and bio flows. However, PTVs produce vector errors due to interpolation process. To overcome these problems, a hybrid PTV algorithm was constructed by combining PTVs' and PIVs' benefits using a linear transformation. The Taylor-Green vortex flows were generated for the tests of vorticity calculations. The conventional gray-level cross-correlation PIV technique and 2-Frame PTV technique were tested for the same flows for comparisons with those obtained by the constructed hybrid algorithm. The excellence of the constructed hybrid algorithm was validated through an actual experiment on the cylinder wake.

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참고문헌

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