摘要
为了研究窄缝坎的冲击波及水舌入水宽度,以某工程泄洪中孔为原型,开展窄缝坎物理模型试验。试验观察到在收缩段内存在一系列冲击波的波阵线。试验量测了窄缝坎冲击波的最大波角和最小波角,并根据试验结果提出了估算公式。在此基础上,根据冲击波理论和自由抛射体运动原理,通过理论分析和试验研究,得到了窄缝坎水舌最大入水宽度及其位置的估算公式。计算结果与试验结果比较表明,两者吻合良好。
In order to study the shock waves and jet width of slit-type flip bucket, physical model tests were carried out based on a real project. In these tests, a series of shock waves were observed in a reduction section. According to the shock wave angles measured, two empirical formulas were proposed for estimating the minimum and maximum shock wave angles. Based on the shock wave theory, the free projectile motion theory, and the data of physical model tests, the estimated formulas for jet maximum width and its location of slit-type flip buckets were presented. Overall, the results based on the proposed formulas agree well with the experimental results.
出处
《水利水电科技进展》
CSCD
北大核心
2014年第3期20-23,29,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(51179056)
关键词
窄缝坎
冲击波
波角
水舌入水宽度
物理模型试验
slit-type flip bucket
shock wave
wave angle
jet width
physical model test
