| 倪汉根,刘韩生,梁川.兼使水流转向的非对称窄缝挑坎[J].水利学报,2001,32(8):0085-0090 |
| 兼使水流转向的非对称窄缝挑坎 |
| Asymmetric slit buckets with function of changing flow direction |
| |
| DOI： |
| 中文关键词: 水流消能 窄缝挑坎 冲击波 |
| 英文关键词: energy dissipation slit bucket shock wave deflection angle |
| 基金项目: |
|
| 摘要点击次数: 1724 |
| 全文下载次数: 140 |
| 中文摘要: |
| 讨论了兼有水流转向功能的一级非对称直线边壁窄缝的设计方法与水力特性，两边墙转向角之差即为水流转向角，两边墙转角相等时出口水流的水深和佛汝德数也分别相等。按在窄缝出口前形成完整幅射流的条件，讨论了兼有转向功能的非对称曲线边墙窄缝的设计方法与水力特性。比较了六种体型(三种对称、三种非对称)窄缝在八种工况对泄槽底板的冲击压强，实测结果表明，非对称性越强冲击压强越小。 |
| 英文摘要: |
| The hydraulic characteristics of asymmetric slit bucket having linear side walls with function of changing flow direction is studied. It is found that the deflection angle of the out going flow is equal to the differenceof the deflection angles of side walls and the flow depth and Froude number at the exit of the bucket will not change if the sum of the deflection angles keepsthe same. The design principle of this kind of bucket is proposed. The impact force of the nappe acting on downstream riverbed measured in model test shows theasymmetric bucket is better than the symmetric one. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |