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Discharge coefficient for vertical sluice gate under submerged condition using contraction and energy loss coefficients
Flow Measurement and Instrumentation ( IF 2.2 ) Pub Date : 2021-07-10 , DOI: 10.1016/j.flowmeasinst.2021.102007
Babak Vaheddoost 1 , Mir Jafar Sadegh Safari 2 , Rasoul Ilkhanipour Zeynali 3
Affiliation  

A novel method is suggested for the determination of flow discharge in vertical sluice gates with considerably small bias. First, in order to derive an equation for the discharge coefficient, energy-momentum equations are implemented to define the physical realization of the phenomenon. Afterward, the discharge coefficient is presented in terms of contraction and energy loss coefficients. Subsequently, discharge coefficient, contraction, and energy loss coefficients were determined through an implicit optimization technique on the data. Data analysis illustrated that there is a meaningful power relationship between the contraction and energy loss coefficients. Thereafter, dimensional analysis is performed and an explicit best-fit regression equation is developed for defining the energy loss coefficient. The obtained equations for contraction and energy loss coefficients were then used in the computation of the discharge coefficient and determination of the flow discharge in the vertical sluice gate. The performance of the developed approach is validated against the selected benchmarks existing in the literature.



中文翻译:

使用收缩和能量损失系数的淹没条件下垂直闸门的流量系数

建议采用一种新方法来确定具有相当小的偏差的垂直闸门中的流量。首先,为了推导出流量系数方程,实施能量-动量方程来定义现象的物理实现。然后,流量系数以收缩和能量损失系数表示。随后,通过对数据的隐式优化技术确定流量系数、收缩和能量损失系数。数据分析表明,收缩和能量损失系数之间存在有意义的幂关系。此后,执行量纲分析并开发明确的最佳拟合回归方程来定义能量损失系数。然后将获得的收缩和能量损失系数方程用于计算流量系数和确定垂直闸门中的流量。所开发方法的性能根据文献中现有的选定基准进行了验证。

更新日期:2021-07-12
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