• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Flow Measurement and Instrumentation >The effects of various upstream arches of crest of the circular crested weir on hydraulic parameters
【24h】

The effects of various upstream arches of crest of the circular crested weir on hydraulic parameters

机译：圆顶堰的上游上游拱顶对水力参数的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Weirs are one of the oldest hydraulic structures ever built by mankind. Weirs are used to measure and regulate the flow. In this paper by using obtained experimental data from physical model, the effects of the various upstream crests on some hydraulic parameters were investigated. The experiments were carried out in the arch angles of 0°, 30°, 45°, 60°, and 90° from the upstream crest in the hydraulics laboratory of Kermanshah Islamic Azad University. The results indicated that effects of the upstream crested arch on the discharge coefficient and energy loss had been negligible, and except for the arch angle of 0°, such effects upon the velocity distribution and the depth of the flow upon the crest of weir are not effective.
机译：堰是人类有史以来最古老的水工建筑之一。堰用于测量和调节流量。本文利用从物理模型获得的实验数据，研究了各种上游波峰对某些水力参数的影响。在Kermanshah伊斯兰Azad大学的水力学实验室中，以与上游波峰成0°，30°，45°，60°和90°的拱角进行了实验。结果表明，上游拱拱对流量系数和能量损失的影响可忽略不计，除了拱角为0°外，对堰顶流速分布和深度的影响均不大。有效。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号