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

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

• 장태현-An experimental study on swirling flow in a cylindrical annuli using the PIV technique.pdf [1,200,555 byte]

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