Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps
Blood pumps need to be further optimized to reduce blood damage and associated clinical complications. Turbulence is the key factor affecting blood damage. Turbulence models, have been widely employed in the design, optimization and evaluation of blood pumps. Advanced turbulence models such as large...
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IEEE
2025-01-01
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| author | Zhigang Pan Fei-Hong Gao Peng Wu |
| author_facet | Zhigang Pan Fei-Hong Gao Peng Wu |
| author_sort | Zhigang Pan |
| collection | DOAJ |
| description | Blood pumps need to be further optimized to reduce blood damage and associated clinical complications. Turbulence is the key factor affecting blood damage. Turbulence models, have been widely employed in the design, optimization and evaluation of blood pumps. Advanced turbulence models such as large-eddy simulation (LES) has shown its advantage in predicting pump performance and resolving turbulence in blood pumps, compared with conventional Reynolds-Averaged Navier-Stokes (RANS) method. Optimization of blood pumps requires an effective comparison of pump performance between multiple designs at reasonable cost. This study aims at exploring the impacts and cost-effectiveness of different turbulence modeling technique in assisting optimization of blood pumps. 25 pump models based on a centrifugal maglev blood pump were designed considering 6 design variables. The steady RANS, unsteady RANS(URANS) and LES were employed to assist the optimization, combined with orthogonal experiments and experimental validation. Turbulence simulation method significantly affects the predicted variation of pressure head among pump models. RANS failed to capture the variation of pressure head, while LES were closest to experiments. Tip clearance was the most influential factor, followed by splitter blade inlet angle. Pump efficiency was improved by 10.76%, 5.55% and 3.21%, for the LES, URANS and RANS respectively. The computational cost of LES is comparable with the URANS, and one order higher than RANS. Thus, when pump performance is the priority, LES should be employed to maximized the gain of optimization, while RANS is a viable option when a tradeoff between cost and gain is expected. |
| format | Article |
| id | doaj-art-5c59ca4a430745f98013affbfe0ff0b0 |
| institution | OA Journals |
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| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
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| spelling | doaj-art-5c59ca4a430745f98013affbfe0ff0b02025-08-20T02:09:03ZengIEEEIEEE Access2169-35362025-01-0113956099561710.1109/ACCESS.2025.356830110993399Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood PumpsZhigang Pan0Fei-Hong Gao1https://orcid.org/0009-0004-9378-7099Peng Wu2Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing, ChinaArtificial Organ Technology Laboratory, School of Mechanical and Electrical Engineering, Soochow University, Suzhou, ChinaJiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing, ChinaBlood pumps need to be further optimized to reduce blood damage and associated clinical complications. Turbulence is the key factor affecting blood damage. Turbulence models, have been widely employed in the design, optimization and evaluation of blood pumps. Advanced turbulence models such as large-eddy simulation (LES) has shown its advantage in predicting pump performance and resolving turbulence in blood pumps, compared with conventional Reynolds-Averaged Navier-Stokes (RANS) method. Optimization of blood pumps requires an effective comparison of pump performance between multiple designs at reasonable cost. This study aims at exploring the impacts and cost-effectiveness of different turbulence modeling technique in assisting optimization of blood pumps. 25 pump models based on a centrifugal maglev blood pump were designed considering 6 design variables. The steady RANS, unsteady RANS(URANS) and LES were employed to assist the optimization, combined with orthogonal experiments and experimental validation. Turbulence simulation method significantly affects the predicted variation of pressure head among pump models. RANS failed to capture the variation of pressure head, while LES were closest to experiments. Tip clearance was the most influential factor, followed by splitter blade inlet angle. Pump efficiency was improved by 10.76%, 5.55% and 3.21%, for the LES, URANS and RANS respectively. The computational cost of LES is comparable with the URANS, and one order higher than RANS. Thus, when pump performance is the priority, LES should be employed to maximized the gain of optimization, while RANS is a viable option when a tradeoff between cost and gain is expected.https://ieeexplore.ieee.org/document/10993399/Blood pumpoptimizationturbulence modellingReynolds-averaged navier-stokes methodlarge-eddy simulation |
| spellingShingle | Zhigang Pan Fei-Hong Gao Peng Wu Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps IEEE Access Blood pump optimization turbulence modelling Reynolds-averaged navier-stokes method large-eddy simulation |
| title | Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps |
| title_full | Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps |
| title_fullStr | Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps |
| title_full_unstemmed | Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps |
| title_short | Turbulence Modeling Technique has Significant Effects on the Optimization of Centrifugal Blood Pumps |
| title_sort | turbulence modeling technique has significant effects on the optimization of centrifugal blood pumps |
| topic | Blood pump optimization turbulence modelling Reynolds-averaged navier-stokes method large-eddy simulation |
| url | https://ieeexplore.ieee.org/document/10993399/ |
| work_keys_str_mv | AT zhigangpan turbulencemodelingtechniquehassignificanteffectsontheoptimizationofcentrifugalbloodpumps AT feihonggao turbulencemodelingtechniquehassignificanteffectsontheoptimizationofcentrifugalbloodpumps AT pengwu turbulencemodelingtechniquehassignificanteffectsontheoptimizationofcentrifugalbloodpumps |