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- Title
Three-dimensional study of spatial submerged hydraulic jump.
- Authors
Zare, H. K.; Baddour, R. E.
- Abstract
A three-dimensional (3D) study of spatial submerged hydraulic jumps (SSHJs) was carried out using a physical model for Froude numbers Fr1 = 2.00 and 3.75 and width ratios α = 0.20 and 0.33. Three orthogonal components of the velocity field were obtained with an acoustic Doppler velocimeter (ADV). The 3D velocity field has indicated that the jump consisted of a central jet-like flow, close to the channel bottom, surrounded by vertical and horizontal circulations (rollers). The circulation was predominantly in vertical planes in the channel central region of the flow and in horizontal planes close to the walls. Vertical and horizontal profiles of stream-wise velocity characterized the 3D roller with two length scales, Lrv and Lrh. The strength of the roller was stronger close to the walls than at the centreline of the jump. Sequent depth and energy head loss for submerged symmetric hydraulic jumps are discussed in terms of the submergence ratio S = y3/y2.
- Subjects
CHANNELS (Hydraulic engineering); FLUID mechanics; SPEED; ACOUSTIC emission; LASER Doppler velocimeter; FLUID dynamic measurements; VELOCIMETRY
- Publication
Canadian Journal of Civil Engineering, 2007, Vol 34, Issue 9, p1140
- ISSN
0315-1468
- Publication type
Article
- DOI
10.1139/L07-041