The geometry of a downstream obstacle is one of the major parameters affecting the stability range of circular hydraulic jumps and, yet, it has not been adequately addressed by researchers. The present study investigates the effects of the downstream obstacle geometry and the parameters like the flow rate, the jet diameter, and the downstream obstacle height on the stability range of circular hydraulic jumps. Its findings indicate that an increase in the fluid jet diameter leads to the narrowing of the stability range of circular jumps. In addition, an increase in the downstream obstacle height produces a reduction of the hydraulic jump radius and its stability range. The results also show that in the presence of a square downstream obstacle the stability range of circular jumps is less than that in the case of a triangular downstream obstacle and greater than in the case of a circular downstream obstacle.

中文翻译：

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稳定圆形水跃台的实验研究

下游障碍物的几何形状是影响圆形水跃稳定性范围的主要参数之一，但尚未得到研究人员的充分解决。本研究调查了下游障碍物几何形状以及流速、射流直径和下游障碍物高度等参数对圆形水跃稳定性范围的影响。其研究结果表明，流体射流直径的增加导致圆形跳跃的稳定范围变窄。此外，下游障碍物高度的增加导致水跃半径及其稳定范围的减小。