Study on the Influence of Design Parameters of Pumping Station Intake Structure on Its Flow Field Characteristics
In order to study the influence of design parameters of intake structure on the flow field characteristics of pumping station,a numerical simulation model of intake structure of pumping station is established in this paper,the validity of the model is verified by field monitoring data.Based on this,the influence of several design parameters on the flow field characteristics of pumping station is evaluated from two aspects of head loss and velocity uniformity.The results show that the numerical simulation results are close to the measured results,and the flow velocity changes with the position are basically the same,the accuracy of the numerical simulation is high,it shows that the numerical simulation model of typical pumping station is reasonable and effective in parameter selection,boundary condition setting and grid division.The influence of the diffusing angle on the flow field characteristics of pumping station is obvious,and the structure of flow field can be improved by reducing the diffusing angle,the mean velocity distribution uniformity increased.When the diffusing angle of intake structure is 20.5°,the bottom longitudinal slope is 1:6.2,the total width is 25.4 m,the submergence depth is 1.4 m,and the back wall cross-section structure is w-shaped,it has good performance in reducing head loss,reducing recirculation area,strengthening mainstream effect and improving velocity distribution uniformity.
water intake structure of pumping stationflow characteristicsnumerical simulationhead loss
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万方数据
