变态河工模型断面平均流速偏离度影响研究

基金项目:

河南省教育厅科学技术研究重点项目(12A570006)

黄河水利职业技术学院科研基金项目(2012KXJS003)

详细信息

Research on Distorted River Model Vertical Velocity Deviation Influence

1. Yellow River Conservancy Technical Institute, Kaifeng 475004, China;
2. Engineering Technology Research Center of Small Watershed Conservancy University of Henan Province, Kaifeng 475004, China;
3. Yunnan Xuanwei Water Authority, Xuanwei 655424, Yunnan, China

摘要: 河工模型试验中袁变态河工模型量测的断面平均流速与正态河工模型量测的断面平均流速有一定的偏离袁变率取值越大袁变态模型的断面平均流速与正态模型的断面平均流速偏离度越大遥通过同变率典型工程模型试验得出院变态模型的断面平均流速总体大于正态模型的断面平均流速遥变态河工模型断面平均流速偏离度受变率选取尧边界条件及流量大小影响袁边界顺直尧水流平稳处袁变态模型的断面平均流速偏离度小于20%;边界变化较大尧流态紊乱处袁变态模型的断面平均流速偏离度大于20%。
- 变态河工模型 /
- 变率选取 /
- 断面平均流速 /
- 偏离度 /
- 影响因素
Abstract: In river model experiment, the section average flow velocity is different between distorted river model and normal model, the deviation degree of average flow velocity increases with the increase of distorted rate. The typical construction experiment shows that the section average flow velocity of distorted river model is faster than normal model; it is affected by distorted rate, boundary conditions and flow. The deviation degree of section average flow velocity is less 20% in boundary straight and flow smoothly, otherwise the opposite.
- River model /
- distorted rate /
- section average flow velocity /
- deviation degree /
- influencing factor

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