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对鹅颈型管道的水流运动特性进行了初步的试验研究和理论分析。分别用毕托管、毕托柱和毕托球量测了鹅颈型管道的压力分布和流速分布 ,并给出其分布规律以及上下游弯头二次流的特征。提出了“抑制效应”、“准二次流”概念。研究结果表明 ,鹅颈型管道水流运动的特性主要取决于过渡段的长度以及弯头的转角和相对曲率半径。
A preliminary experimental study and theoretical analysis on the flow characteristics of gooseneck pipelines were carried out. The pressure distribution and flow velocity distribution of gooseneck pipes were measured by using Biot tube, Biotuo column and Biot balls respectively. The distribution characteristics of the gooseneck ducts and the characteristics of secondary flow in the upper and lower stream elbows were also given. Put forward the “inhibition effect”, “quasi-secondary flow” concept. The results show that the characteristics of gooseneck pipe flow depend mainly on the length of the transition section and the corner and relative radius of curvature of the elbow.