大连海事大学学报 >
2015 , Vol. 41 >Issue 3: 77 - 81
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2015.03.014
叶顶间隙及掠改型对混流喷泵的影响
收稿日期: 2014-11-24
修回日期: 2014-12-09
网络出版日期: 2014-12-09
基金资助
中央高校基本科研业务费专项资金资助项目(3132015207；3132013304)；辽宁省教育厅科学研究一般项目(L2013199).
Influence of tip clearance and swept modification on a mixed-flow water-jet pump
Received date: 2014-11-24
Revised date: 2014-12-09
Online published: 2014-12-09
以混流式喷水推进泵作为研究对象，采用三维雷诺平均N-S方程和S-A湍流模型进行CFD模拟，研究不同叶顶间隙下喷泵的性能和流场损失状况，进而做动叶掠改型以期改善对叶顶间隙流动. 结果显示：叶顶间隙的存在有助于沟通压力面与吸力面压差，减少动叶出口回流. 对于所研究的喷水推进混流泵，在0~0.6 mm小叶顶间隙时，效率随间隙增大而升高，而间隙过大会使泄漏损失增加，最优间隙为0.6 mm. 对动叶进行的掠改型发现，前掠会使压力面前缘的损失略有提高，但叶片整体损失下降；从吸力面来看,前掠有助于减小叶顶泄漏损失，+5°掠全工况的效率均有提高，并获得较为平稳的功率曲线.
钟兢军 , 王洪瑞 , 韩吉昂 . 叶顶间隙及掠改型对混流喷泵的影响[J]. 大连海事大学学报, 2015 , 41(3) : 77 -81 . DOI: 10.16411/j.cnki.issn1006-7736.2015.03.014
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