NON-BREAKING UNDULAR HYDRAULIC JUMP

The differences between the undular jump and the undular surge are des cribed. Further, the limit approach flow depth and the channel width a re defined for undular jumps governed by the Froude similarity law. Ba sed on previous and present observations, the main flow characteristic s of undular jumps are established. These include surface characterist ics along the axis and the walls of the rectangular channel. Also, gen eralized surface profiles are presented. Finally, the formation of sho cks is physically explained as a breakdown of the supercritical approa ch flow.