Abstract
Hydraulic Jump is a phenomenon that occurs in free surface flows during transition from supercritical to subcritical flow. During the impingement of a vertical fluid jet with a flat surface, a circular hydraulic jump forms, which has been studied by several researchers; but no study has been performed on the effect of convexity of the target surface on the jump radius and its form yet. Therefore, in the present study the hydraulic jump phenomenon on convex surfaces and comparison with the flat surface are presented, experimentally. The tests are performed using 3 nozzles in various volumetric flow rates. The results showed that convex surfaces significantly increased the jump radius up to about 30% compared to flat plates for about 50% increase in convex target plate radius. In addition, an experimental relation for the hydraulic jump radius in the convex target plates is proposed.
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