Analysis of Transitional Flow in Tube Based on PIV

Jun Wang; Guang Sheng Du; Yong Hui Liu

doi:10.4028/www.scientific.net/AMM.574.485

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 574Analysis of Transitional Flow in Tube Based on PIV

Analysis of Transitional Flow in Tube Based on PIV

Abstract:

In order to get the situation of transitional flow in tube, we tested the fluid field by PIV experiment and acquired the velocity distribution of the flow field at different Reynolds number (Re=2400 and Re=3000). At the same time the structure and characteristics of the flow field were obtained. The experimental result shows that the change of axial velocity in boundary layer is not obvious at low Reynolds number, the fluctuation of axial velocity appears and normal speed changes a little in mainstream area. With the increase of Reynolds number the axial velocity both in boundary layer and mainstream area change obviously, pulsation of the normal speed increases, the state of fluid flow gradually evolves from laminar to transitional flow.

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Periodical:

Applied Mechanics and Materials (Volume 574)

Pages:

485-488

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.574.485

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Online since:

July 2014

Authors:

Jun Wang*, Guang Sheng Du, Yong Hui Liu

Keywords:

Flow Field, PIV, Transitional Flow, Velocity Distribution

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