Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2002.08a
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- Pages.249-252
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- 2002
Construction of Database on Turbulent Properties of a Circular Cylinder with a 3D-PTV Technique
3차원 PTV에 의한 원주후류 난류통계량 데이터베이스 구축
-
Doh D. H.
;
- Cho Y B. ;
- ;
- Pyeon Y. B. ;
- Baek T. S.
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도덕희
(한국해양대, 기계정보공학부)
;
- 조용범 (한국해양대, 기계정보공학부) ;
- 황태규 (한국해양대, 기계정보공학부) ;
- 편용범 ((주)티엔텍) ;
- 백태실 (포항제1대학, 자동차학과)
- Published : 2002.08.01
Abstract
Turbulent properties of the wake of a circular cylinder were measured The diameter of the cylinder is l0mm and the Reynolds number is 420. A new 3D-PTY system was constructed and a genetic algorithm (GA) was introduced in order to increase the number of instantaneous three-dimensional velocity vectors. In the GA two fitness functions were introduced in order to enhance the correspondences of the particles. The measurement system consists of three CCD cameras, Ar-ion laser, an image grabber and a host computer. More than 3000 instantaneous three-dimensional velocity vectors were obtained by the system. The database of the turbulent properties of the circular cylinder was constructed by the constructed 3D-PTV system.
Keywords