Add a Media Piece
default edit
Back to the Gallery
This will be replaced by the player.

Title: Decelerating surge against an adverse slope at Fr=2.02

Description: Decelerating surge against an adverse slope at a Froude no. Fr = 2.02. Propagation of the decelerating breaking surge past the ADV unit (x = 5 m). Duration: 33 s, Q= 57.5 l/s, do = 70.1 mm, So = 0.0145, Smooth PVC invert, Gate opening after closure: 90 mm.
Note the slow propagation of the positive surge (bore) which will stop and transform into a stationary hydraulic jump [1].


References: [1] Chanson, Hubert (2008) Turbulence in Positive Surges and Tidal Bores. Effects of Bed Roughness and Adverse Bed Slopes. Hydraulic Model Report CH68/08, Civil Engineering, The University of Queensland.

Web Page:

Contributed By: Hubert Chanson

The eFluids editor for videos is G. M. "Bud" Homsy (
and for images is Jean Hertzberg (
Please contact them if you have any problems, questions, or concerns related to the galley or videos and images.
© Copyright on the videos is held by the contributors.
Apart from Fair Use, permission must be sought for any other purpose.