Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump
In order to study the energy characteristics and internal flow field of “S” shaped airfoil bidirectional axial flow pumps, the SST <i>k</i>-<i>ω</i> turbulence model is used to calculate the bidirectional axial flow pump, and the experimental verification is carried out. The...
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MDPI AG
2022-09-01
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author | Chuanliu Xie Andong Feng Tenglong Fu Cheng Zhang Tao Zhang Fan Yang |
author_facet | Chuanliu Xie Andong Feng Tenglong Fu Cheng Zhang Tao Zhang Fan Yang |
author_sort | Chuanliu Xie |
collection | DOAJ |
description | In order to study the energy characteristics and internal flow field of “S” shaped airfoil bidirectional axial flow pumps, the SST <i>k</i>-<i>ω</i> turbulence model is used to calculate the bidirectional axial flow pump, and the experimental verification is carried out. The results show that the error of numerical calculation of forward and reverse operation is within 5%, and the numerical calculation result is credible. The test results show that the bidirectional axial flow pump has a design flow rate of <i>Q</i> = 368 L/s, head <i>H</i> = 3.767 m, and an efficiency of <i>η</i> = 80.37%. In reverse operation, the flow of the bidirectional axial flow pump under design condition <i>Q</i> = 316 L/s, head <i>H</i> = 3.658 m, efficiency <i>η</i> = 70.37%. The flow of forward operation is about 15% larger than that of reverse operation under design working condition, the design head is about 3.70 m, and the efficiency of design working condition is about 10% higher than that of reverse operation. The numerical calculation results show that under the forward design condition (<i>Q</i> = 368 L/s), the hydraulic loss accounts for 6.22%, and under the reverse design condition (<i>Q</i> = 316 L/s), the hydraulic loss accounts for 11.81%, with a difference of about 6%. The uniformity of impeller inlet flow rate under the forward operation is about 12% higher than that in the reverse operation. In forward and reverse operation, with the increase of flow, the outlet streamline, the outlet total pressure distribution, the uniformity of impeller inlet velocity, and the vortex in the impeller domain are improved, and the forward direction is better than the reverse direction. The research results of this paper can provide a reference for the research and optimal design of the bidirectional axial flow pump. |
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language | English |
last_indexed | 2024-03-09T22:11:07Z |
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spelling | doaj.art-28bf4a4f3a33405c9c515bf7fc70a5c62023-11-23T19:30:55ZengMDPI AGWater2073-44412022-09-011418283910.3390/w14182839Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow PumpChuanliu Xie0Andong Feng1Tenglong Fu2Cheng Zhang3Tao Zhang4Fan Yang5College of Engineering, Anhui Agricultural University, Hefei 230036, ChinaCollege of Engineering, Anhui Agricultural University, Hefei 230036, ChinaCollege of Engineering, Anhui Agricultural University, Hefei 230036, ChinaCollege of Engineering, Anhui Agricultural University, Hefei 230036, ChinaCollege of Engineering, Anhui Agricultural University, Hefei 230036, ChinaCollege of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 214000, ChinaIn order to study the energy characteristics and internal flow field of “S” shaped airfoil bidirectional axial flow pumps, the SST <i>k</i>-<i>ω</i> turbulence model is used to calculate the bidirectional axial flow pump, and the experimental verification is carried out. The results show that the error of numerical calculation of forward and reverse operation is within 5%, and the numerical calculation result is credible. The test results show that the bidirectional axial flow pump has a design flow rate of <i>Q</i> = 368 L/s, head <i>H</i> = 3.767 m, and an efficiency of <i>η</i> = 80.37%. In reverse operation, the flow of the bidirectional axial flow pump under design condition <i>Q</i> = 316 L/s, head <i>H</i> = 3.658 m, efficiency <i>η</i> = 70.37%. The flow of forward operation is about 15% larger than that of reverse operation under design working condition, the design head is about 3.70 m, and the efficiency of design working condition is about 10% higher than that of reverse operation. The numerical calculation results show that under the forward design condition (<i>Q</i> = 368 L/s), the hydraulic loss accounts for 6.22%, and under the reverse design condition (<i>Q</i> = 316 L/s), the hydraulic loss accounts for 11.81%, with a difference of about 6%. The uniformity of impeller inlet flow rate under the forward operation is about 12% higher than that in the reverse operation. In forward and reverse operation, with the increase of flow, the outlet streamline, the outlet total pressure distribution, the uniformity of impeller inlet velocity, and the vortex in the impeller domain are improved, and the forward direction is better than the reverse direction. The research results of this paper can provide a reference for the research and optimal design of the bidirectional axial flow pump.https://www.mdpi.com/2073-4441/14/18/2839“S” shaped airfoilbidirectional axial flow pumpenergy characteristicsinternal flow field |
spellingShingle | Chuanliu Xie Andong Feng Tenglong Fu Cheng Zhang Tao Zhang Fan Yang Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump Water “S” shaped airfoil bidirectional axial flow pump energy characteristics internal flow field |
title | Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump |
title_full | Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump |
title_fullStr | Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump |
title_full_unstemmed | Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump |
title_short | Analysis of Energy Characteristics and Internal Flow Field of “S” Shaped Airfoil Bidirectional Axial Flow Pump |
title_sort | analysis of energy characteristics and internal flow field of s shaped airfoil bidirectional axial flow pump |
topic | “S” shaped airfoil bidirectional axial flow pump energy characteristics internal flow field |
url | https://www.mdpi.com/2073-4441/14/18/2839 |
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