Flow Loss Analysis and Optimal Design of a Diving Tubular Pump
As important parts of underground water conveyance equipment, diving tubular pumps are widely used in various fields related to the national economy. Research and development of submersible pumps with better performance have become green goals that need to be achieved urgently in low-carbon developm...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/10/3/175 |
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| author | Xiao Yang Ding Tian Qiaorui Si Minquan Liao Jiawei He Xiaoke He Zhonghai Liu |
| author_facet | Xiao Yang Ding Tian Qiaorui Si Minquan Liao Jiawei He Xiaoke He Zhonghai Liu |
| author_sort | Xiao Yang |
| collection | DOAJ |
| description | As important parts of underground water conveyance equipment, diving tubular pumps are widely used in various fields related to the national economy. Research and development of submersible pumps with better performance have become green goals that need to be achieved urgently in low-carbon development. This paper provides an effective approach for the enhancement of the performance of a diving tubular pump by adopting computational fluid dynamics, one-dimensional theory, and response surface methodology. First, the flow loss characteristics of the pump under several flow rate conditions are analyzed by entropy production theory, and then the impeller and guide vanes are redesigned using the traditional one-dimensional theory. Then, the surface response experimental method is used to improve pump hydraulic efficiency. The streamline angle (A) of the front cover of the impeller blade, the placement angle (B) of the middle streamline inlet, and the placement angle (C) of the rear cover flowline inlet are the response variables to optimize the design parameters of the diving tubular pump. Results show that wall entropy production and turbulent kinetic energy entropy production play the leading role in the internal flow loss of the diving tubular pump, while viscous entropy production can be ignored. The flow loss inside the impeller is mainly concentrated at the inlet and the outlet of the impeller blade, and the flow loss inside the guide vane is mainly concentrated in the area near the guide vane and the entrance of the guide vane. A, B, and C are all significant factors that affect efficiency. The order of the influencing factors from strong to weak is as follows: A<sup>2</sup> (<i>p</i> = 0.000) > C (<i>p</i> = 0.007) = A × B (<i>p</i> = 0.007) > B (<i>p</i> = 0.023) > B<sup>2</sup> (<i>p</i> = 0.066) > A × C (<i>p</i> = 0.094) > A (<i>p</i> = 0.162) > C<sup>2</sup> (<i>p</i> = 0.386) > A × B (<i>p</i> = 0.421). The best combination of response variables after surface response test design is A = 9°, B = 31°, and C = 36°. After optimization, the pump efficiency and the head of the model pump are increased by 32.99% and 18.71%, respectively, under the design flow rate. The optimized model pump is subjected to tests, and the test data and the simulation data are in good agreement, which proves the feasibility of using the surface response method to optimize the design of the model pump. |
| first_indexed | 2024-03-09T13:33:30Z |
| format | Article |
| id | doaj.art-b793d8745ded4d7291cc484bd84c1691 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T13:33:30Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-b793d8745ded4d7291cc484bd84c16912023-11-30T21:15:53ZengMDPI AGMachines2075-17022022-02-0110317510.3390/machines10030175Flow Loss Analysis and Optimal Design of a Diving Tubular PumpXiao Yang0Ding Tian1Qiaorui Si2Minquan Liao3Jiawei He4Xiaoke He5Zhonghai Liu6School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, ChinaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, ChinaSchool of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, ChinaHunan Neptune Pump Co., Ltd., Changsha 410100, ChinaAs important parts of underground water conveyance equipment, diving tubular pumps are widely used in various fields related to the national economy. Research and development of submersible pumps with better performance have become green goals that need to be achieved urgently in low-carbon development. This paper provides an effective approach for the enhancement of the performance of a diving tubular pump by adopting computational fluid dynamics, one-dimensional theory, and response surface methodology. First, the flow loss characteristics of the pump under several flow rate conditions are analyzed by entropy production theory, and then the impeller and guide vanes are redesigned using the traditional one-dimensional theory. Then, the surface response experimental method is used to improve pump hydraulic efficiency. The streamline angle (A) of the front cover of the impeller blade, the placement angle (B) of the middle streamline inlet, and the placement angle (C) of the rear cover flowline inlet are the response variables to optimize the design parameters of the diving tubular pump. Results show that wall entropy production and turbulent kinetic energy entropy production play the leading role in the internal flow loss of the diving tubular pump, while viscous entropy production can be ignored. The flow loss inside the impeller is mainly concentrated at the inlet and the outlet of the impeller blade, and the flow loss inside the guide vane is mainly concentrated in the area near the guide vane and the entrance of the guide vane. A, B, and C are all significant factors that affect efficiency. The order of the influencing factors from strong to weak is as follows: A<sup>2</sup> (<i>p</i> = 0.000) > C (<i>p</i> = 0.007) = A × B (<i>p</i> = 0.007) > B (<i>p</i> = 0.023) > B<sup>2</sup> (<i>p</i> = 0.066) > A × C (<i>p</i> = 0.094) > A (<i>p</i> = 0.162) > C<sup>2</sup> (<i>p</i> = 0.386) > A × B (<i>p</i> = 0.421). The best combination of response variables after surface response test design is A = 9°, B = 31°, and C = 36°. After optimization, the pump efficiency and the head of the model pump are increased by 32.99% and 18.71%, respectively, under the design flow rate. The optimized model pump is subjected to tests, and the test data and the simulation data are in good agreement, which proves the feasibility of using the surface response method to optimize the design of the model pump.https://www.mdpi.com/2075-1702/10/3/175diving tubular pumpenergy lossentropy generationsurface response methodpump hydraulic performance |
| spellingShingle | Xiao Yang Ding Tian Qiaorui Si Minquan Liao Jiawei He Xiaoke He Zhonghai Liu Flow Loss Analysis and Optimal Design of a Diving Tubular Pump Machines diving tubular pump energy loss entropy generation surface response method pump hydraulic performance |
| title | Flow Loss Analysis and Optimal Design of a Diving Tubular Pump |
| title_full | Flow Loss Analysis and Optimal Design of a Diving Tubular Pump |
| title_fullStr | Flow Loss Analysis and Optimal Design of a Diving Tubular Pump |
| title_full_unstemmed | Flow Loss Analysis and Optimal Design of a Diving Tubular Pump |
| title_short | Flow Loss Analysis and Optimal Design of a Diving Tubular Pump |
| title_sort | flow loss analysis and optimal design of a diving tubular pump |
| topic | diving tubular pump energy loss entropy generation surface response method pump hydraulic performance |
| url | https://www.mdpi.com/2075-1702/10/3/175 |
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