Stereo PIV measurement of open channel flows in RA8 flume at the University of Sheffield

Stereo PIV measurement of open channel flows in RA8 flume at the University of Sheffield

Six flow conditions over a rough bed of spheres with 24mm diameter. PIV plane was at the centerline of the flow shining through the bed of spheres. Where the laser PIV plane shone up, the spheres were replaced with translucent hollow spheres to allow the light to go through. Gradient of the flow was 0.001.

Water Depth
Flow rate
Velocity
Reynolds’ number
Manning’s number
Froude number
Weber number
Relative Submergence

(mm)
(l/s)
(m/s)
(with depth)

49
1.87
0.08
3,740
0.049
0.11
3.96
2.04

69
5.05
0.15
10,100
0.031
0.18
20.53
2.88

89
7.46
0.17
14,920
0.031
0.18
34.74
3.71

109
11.21
0.21
22,420
0.028
0.2
64.05
4.54

129
15.4
0.24
30,800
0.026
0.21
102.14
5.38

149
20.7
0.28
41,400
0.023
0.23
159.77
6.21