Abstract
The present study explores the influence of conduit tilt as well as top and side wall confinements on planar hydraulic jumps by means of extensive experiments and theoretical analysis. The observations are consolidated as a phase diagram that identifies the natural jump regime bounded by full bore flow, subcritical flow, and supercritical flow throughout the conduit and also shows the presence of multiple hydrodynamic states for a certain range of input parameters. Upslope flow is found to exhibit unique instabilities and undergo a hysteretic excursion to regain the initial stable configuration. The jump induced hysteretic flow in sloping conduits is reported for the first time.
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