Optimal Design of Slit Impeller for Low Specific Speed Centrifugal Pump Based on Orthogonal Test

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dc.creatorYang, Yang
dc.creatorZhou, Ling
dc.creatorZhou, Hongtao
dc.creatorLv, Wanning
dc.creatorWang, Jian
dc.creatorShi, Weidong
dc.creatorHe, Zhaoming
dc.date.accessioned2021-08-20T16:05:12Z
dc.date.available2021-08-20T16:05:12Z
dc.date.issued2021
dc.descriptionThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citeden_US
dc.description.abstractMarine centrifugal pumps are mostly used on board ship, for transferring liquid from one point to another. Based on the combination of orthogonal testing and numerical simulation, this paper optimizes the structure of a drainage trough for a typical low-specific speed centrifugal pump, determines the priority of the various geometric factors of the drainage trough on the pump performance, and obtains the optimal impeller drainage trough scheme. The influence of drainage tank structure on the internal flow of a low-specific speed centrifugal pump is also analyzed. First, based on the experimental validation of the initial model, it is determined that the numerical simulation method used in this paper is highly accurate in predicting the performance of low-specific speed centrifugal pumps. Secondly, based on the three factors and four levels of the impeller drainage trough in the orthogonal test, the orthogonal test plan is determined and the orthogonal test results are analyzed. This work found that slit diameter and slit width have a large impact on the performance of low-specific speed centrifugal pumps, while long and short vane lap lengths have less impact. Finally, we compared the internal flow distribution between the initial model and the optimized model, and found that the slit structure could effectively reduce the pressure difference between the suction side and the pressure side of the blade. By weakening the large-scale vortex in the flow path and reducing the hydraulic losses, the drainage trough impellers obtained based on orthogonal tests can significantly improve the hydraulic efficiency of low-specific speed centrifugal pumps.en_US
dc.identifier.citationYang Y, Zhou L, Zhou H, Lv W, Wang J, Shi W, He Z. Optimal Design of Slit Impeller for Low Specific Speed Centrifugal Pump Based on Orthogonal Test. Journal of Marine Science and Engineering. 2021; 9(2):121. https://doi.org/10.3390/jmse9020121en_US
dc.identifier.urihttps://doi.org/10.3390/jmse9020121
dc.identifier.urihttps://hdl.handle.net/2346/87681
dc.language.isoengen_US
dc.subjectCentrifugal Pumpen_US
dc.subjectUnsteady Flowen_US
dc.subjectGap Drainageen_US
dc.subjectNumerical Simulationen_US
dc.subjectLow Specific Speeden_US
dc.titleOptimal Design of Slit Impeller for Low Specific Speed Centrifugal Pump Based on Orthogonal Testen_US
dc.typeArticleen_US

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