TY - GEN
T1 - PIV experiment on the turbulent stripe in Poiseuille channel flow at the transitional Reynolds number
AU - Wu, X.
AU - Aida, H.
AU - Washio, N.
AU - Tsukahara, T.
AU - Kawaguchi, Y.
AU - Yu, B.
PY - 2011
Y1 - 2011
N2 - The instantaneous velocity fields at the Reynolds number from Re m=1 200 to Rem=2 600, were measured by particle image velocimetry (PIV) to investigate the flow structure in transitional region directly and many details about flow field. The high velocity region and low velocity region, which indicate the stripe structure at transitional Reynolds number, can be found in these instantaneous velocity fields. And then, the turbulent stripe, which is shown in former numerical simulation [1], was extracted from the reconstructed flow field based on Taylor's hypothesis. The borderline between high velocity stripe and low velocity stripe was observed to be inclined against the streamwise direction.
AB - The instantaneous velocity fields at the Reynolds number from Re m=1 200 to Rem=2 600, were measured by particle image velocimetry (PIV) to investigate the flow structure in transitional region directly and many details about flow field. The high velocity region and low velocity region, which indicate the stripe structure at transitional Reynolds number, can be found in these instantaneous velocity fields. And then, the turbulent stripe, which is shown in former numerical simulation [1], was extracted from the reconstructed flow field based on Taylor's hypothesis. The borderline between high velocity stripe and low velocity stripe was observed to be inclined against the streamwise direction.
KW - critical Reynolds number
KW - flow field reconstruction
KW - particle image velocimetry
KW - transitional flow
UR - http://www.scopus.com/inward/record.url?scp=80355136387&partnerID=8YFLogxK
U2 - 10.1063/1.3651836
DO - 10.1063/1.3651836
M3 - Conference contribution
AN - SCOPUS:80355136387
SN - 9780735409361
T3 - AIP Conference Proceedings
SP - 66
EP - 71
BT - Recent Progresses in Fluid Dynamics Research - Proceedings of the Sixth International Conference on Fluid Mechanics, ICFM VI
T2 - Proceedings of the 6th International Conference on Fluid Mechanics: Recent Progresses in Fluid Dynamics Research, ICFM VI
Y2 - 30 June 2011 through 3 July 2011
ER -