대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2002년도 학술대회지
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- Pages.217-220
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- 2002
언덕이 있는 하상유동 계측을 통한 PTV기법의 수력학적 적용연구
Assessment of PIV to Measure the Flow Field Over a Fixed Dune Bed
- 현범수 ;
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- Hyun B.-S. (Korea Maritime Univ.) ;
- Balachandar R. (Univ. of Saskatchewan) ;
- Patel V. C. (IIHR, Univ. of Iowa)
- 발행 : 2002.08.01
초록
The assessment of PIV to measure the mean velocity and turbulence was carried out over a train of fixed two-dimensional dunes. The agreement between the PIV and LDV is good enough even in regions of flow reversals and high shear. Though limited in the wall normal direction field-of-view, PIV provides instantaneous flow fields, which reveal the complex nature of flow over dunes, as well as more sophisticated analyses such as two-point space correlation and quadrant analysis with a reasonable accuracy.