TY - JOUR
T1 - Measurements of large streamwise vortices in an open‐channel flow
AU - Gulliver, John S.
AU - Halverson, Martin J.
PY - 1987/1
Y1 - 1987/1
N2 - The moving‐bed flume, where the cross‐sectional mean velocity is zero, has proven to be useful for visualization of coherent structures in the flow, especially streamwise vortices with a size scale equal to the depth. The temporal mean of these streamwise vortices is turbulence driven secondary motion. Hydrogen bubbles illuminated by a plane of laser light are used to visualize and measure these vortices. Flow visualization at the zero mean velocity point provides a unique view of the streamwise vortices without the interference of the mean flow velocity.
AB - The moving‐bed flume, where the cross‐sectional mean velocity is zero, has proven to be useful for visualization of coherent structures in the flow, especially streamwise vortices with a size scale equal to the depth. The temporal mean of these streamwise vortices is turbulence driven secondary motion. Hydrogen bubbles illuminated by a plane of laser light are used to visualize and measure these vortices. Flow visualization at the zero mean velocity point provides a unique view of the streamwise vortices without the interference of the mean flow velocity.
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U2 - 10.1029/WR023i001p00115
DO - 10.1029/WR023i001p00115
M3 - Article
AN - SCOPUS:0023524491
SN - 0043-1397
VL - 23
SP - 115
EP - 123
JO - Water Resources Research
JF - Water Resources Research
IS - 1
ER -