An experimental study on swirling flow in a cylindrical annuli using the PIV technique
- 저자
- 장*현
- 게재저널
- Journal of Visualization (http://www.springer.com/materials/mechanics/journal/12650)
- 키워드
- Annuli Multi-pitot tube Concave tube Convex tube Swirl flow angle
- 개요
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An experimental investigation was conducted to study the characteristics of turbulent swirling
flow in an axisymmetric annuli. The swirl angle measurements were performed using a flow visualization
technique using smoke and dye liquid for Re = 60,000?80,000. Using the two-dimensional particle image
velocimetry method, this study found the time-mean velocity distribution and turbulent intensity in water
with swirl for Re = 20,000, 30,000, and 40,000 along longitudinal sections. There were neutral points
for equal axial velocity at y/(R - r) = 0.7?0.75, and the highest axial velocity was recorded near
y/(R - r) = 0.9. Negative axial velocity was observed near the convex tube along X/(D - d) = 3?23.
- 첨부파일
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