人民黄河2016，Vol.38Issue(4)：82-84,3.DOI:10.3969/j.issn.1000-1379.2016.04.019
台阶式溢洪道水流比能与剩余能量关系研究
Relationship of Specific Energy and Residual Energy on Stepped Spillways
文明宜 1刘韩生 1范灵芝1
作者信息
- 1. 西北农林科技大学 水利与建筑工程学院，陕西 杨凌712100
- 折叠
摘要
Abstract
Specific energy is an important hydraulic index on stepped spillways. Residual energy was introduced and the relationship between specific energy and residual energy on stepped spillway was analyzed. Combining with the hydraulic model experiment of Simutasi Hydropower Station's stepped spillway, specific energy along the flow path was studied under different discharges and step heights. The results indicate that specific energy of skimming flow on stepped spillways can first increase and then remain constant along the flow path and the stable value of specific energy equals to the residual energy at the exert of stepped spillway. Residual energy increases with unit discharge while decreases with step height. Through dimensional analysis and regression analysis, a good linear relationship between two non⁃dimensional parameters was found, providing a new way for the study of hydraulic characteristics of stepped spillway. A formula to calculate residual energy on stepped spillway at slope of 1�1. 25 and the relationship between residual energy and energy dissipation rate were put forward, providing references for related design.关键词
台阶式溢洪道/模型试验/断面比能/剩余能量Key words
stepped spillways/model experiment/specific energy/residual energy分类
建筑与水利引用本文复制引用
文明宜,刘韩生,范灵芝..台阶式溢洪道水流比能与剩余能量关系研究[J].人民黄河,2016,38(4):82-84,3.
