扩散型梯形断面跃后共轭水深的解析计算研究
发布时间：2019-02-25 19:18
【摘要】：针对现有水闸消能计算公式只适用于矩形断面的不足,而浙江沿海地区挡潮排涝闸已创新性地采用了梯形断面,水闸规范(SL-265-2001)消能公式需补充完善。根据水力学理论和数学理论对扩散型梯形翼墙水闸水力消能计算进行了研究,推导出了相对收缩水深的解析计算式和扩散型梯形翼墙消力池的水跃共轭水深基本方程,并利用数学方程理论和因式分解法给出了无扩散时梯形断面跃后水深的一元四次方程公式解,进而给出了梯形断面跃后水深通用简捷计算公式,并通过Matlab软件数值分析,认为该跃后水深通用算式精度较高。
[Abstract]:In view of the deficiency that the existing formula of sluice energy dissipation is only suitable for rectangular cross section, the trapezoidal section has been innovatively adopted for tidal flood sluice in Zhejiang coastal area, and the formula of energy dissipation for sluice code (SL-265-2001) needs to be supplemented and perfected. Based on the hydraulic theory and mathematical theory, the hydraulic energy dissipation calculation of diffused trapezoidal wing wall sluice is studied. The analytical formula of relative shrinkage water depth and the basic equation of hydraulic jump conjugate depth of diffused trapezoid wing wall stilling pool are derived. By means of mathematical equation theory and factorial decomposition method, the formula solution of one-dimensional quartic equation of water depth after trapezoidal cross-section jump is given in this paper. Furthermore, the general and simple formula for calculating the water depth after trapezoidal cross-section jump is given, and the numerical analysis with Matlab software is carried out. It is considered that the accuracy of the general formula of water depth after the jump is high.
【作者单位】： 浙江省水利水电勘测设计院;
【基金】：水利部公益性行业科研专项项目(201401010) 围垦院软基水闸创新团队科标业项目资助
【分类号】：TV135.2
本文编号：2430456
[Abstract]:In view of the deficiency that the existing formula of sluice energy dissipation is only suitable for rectangular cross section, the trapezoidal section has been innovatively adopted for tidal flood sluice in Zhejiang coastal area, and the formula of energy dissipation for sluice code (SL-265-2001) needs to be supplemented and perfected. Based on the hydraulic theory and mathematical theory, the hydraulic energy dissipation calculation of diffused trapezoidal wing wall sluice is studied. The analytical formula of relative shrinkage water depth and the basic equation of hydraulic jump conjugate depth of diffused trapezoid wing wall stilling pool are derived. By means of mathematical equation theory and factorial decomposition method, the formula solution of one-dimensional quartic equation of water depth after trapezoidal cross-section jump is given in this paper. Furthermore, the general and simple formula for calculating the water depth after trapezoidal cross-section jump is given, and the numerical analysis with Matlab software is carried out. It is considered that the accuracy of the general formula of water depth after the jump is high.
【作者单位】： 浙江省水利水电勘测设计院;
【基金】：水利部公益性行业科研专项项目(201401010) 围垦院软基水闸创新团队科标业项目资助
【分类号】：TV135.2
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