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This paper focuses on the renovation project of Jianzhong Pumping Station in Hebei Province. The computational fluid dynamics (CFD) technology was used to optimize the rectification measures of the forebay of the side-inlet axial flow pump, as well as the inlet and outlet flow passages, and simultaneously predict the energy performance of the pump unit. Based on the CFD optimization of the inlet and outlet flow passages of the pump unit, a model test study of optimization scheme for pump unit was carried out. The test results show that the efficiency of the pump unit reaches 73.8% under the design lift, which is basically consistent with the prediction conclusion of the CFD method. This study indicates that when optimizing the flow passage design of the axial flow pump unit, giving priority to using the CFD technology to select the optimal schemes for the inlet and outlet flow passages of the pump unit and then verifying through the model test of the pump unit can greatly save the investment cost and accelerate the project progress, providing a reference for similar projects.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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