Research on Calculation Method for Discharge Capacity of Draining Well in Tailing Ponds Based on “Simplification-Fitting” Method

The existing empirical formulas concerning draining systems are complex in their expression: there are difficulties in locating the intersection point among different flow patterns and parameters vary depending on the water level, resulting in a large amount of data to be processed and low calculati...

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Bibliographic Details
Published inEnergies (Basel) Vol. 15; no. 12; p. 4194
Main Authors Wang, Sha, Mei, Guodong, Guo, Lijie, Xie, Xuyang, Skrzypkowski, Krzysztof
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2022
Subjects
Accuracy
Algorithms
Dams
Discharge capacity
Drainage systems
draining well
empirical formula
Flow distribution
Fluid dynamics
Free flow
Hydraulics
Methods
Ponds
Pressure
Reynolds number
Simplification
simplification fitting
Simulation
Turbulence models
Water discharge
Water levels
window type
China
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Summary:The existing empirical formulas concerning draining systems are complex in their expression: there are difficulties in locating the intersection point among different flow patterns and parameters vary depending on the water level, resulting in a large amount of data to be processed and low calculation efficiency. To solve these problems, a “simplification-fitting” method was proposed herein to calculate the discharge capacity of a window-type draining well, and optimal and reasonable locations were selected as discrete points of water level to deduce the increasing progressive relationship of free flow discharge capacity among discrete points according to the window size and longitudinal layout of window-type draining wells. Additionally, the algorithm simplified the discharge formulas of half-pressure flow and pressure flow and defined the convergence criteria for water level-discharge capacity to further simplify the expression of pressure flow. The comparison and contrast between the simplified calculation method and empirical formula method show that the method herein is of high precision. It is able to resolve the shortcomings of the traditional theoretical formula method in solving the discharge capacity curve of a window-type draining well and simplify the algorithm integration.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15124194