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为保证池水建筑物侧墙的稳定与安全,通过模型试验研究了突扩突跌体型的侧墙上的水力特性。采用比尺为1¨30的水工模型,在高流速条件下观测了侧墙水流流态、通气量、掺气浓度及时均压力分布。试验细部结构特征,发现侧空腔内的反射回漩流和突扩弧形面上的白色蚀带。侧墙等压线分析发现:侧墙水流冲击带是引发或影响各种侧墙水力特性的主导因素,冲击带水流向上游反射,缩小了侧空腔的有效通气面积;冲击带水流的折冲作用,可能诱发侧墙空化空蚀破坏。
In order to ensure the stability and safety of the side wall of the pool building, the hydraulic characteristics of the side wall of the sudden expansion body were studied by the model test. Using the hydraulic model with a scale of 1¨30, the flow pattern, aeration volume, aeration concentration and time-average pressure distribution of the side wall were observed under high flow velocity conditions. Experimental details of the structural features found in the lateral cavity back to the swirling flow and sudden expansion arcuate white etching zone. Sidewall isobaric line analysis found that the impact band on the side wall is the main factor that causes or affects the hydraulic characteristics of the various side walls. The impact of the water flow upstream reflects and narrows the effective ventilation area of the side cavity. The impact of water flow in the impact zone , May induce cavitation damage cavitation wall.