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论文:2024,Vol:42,Issue(3):467-476 |
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引用本文： |
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陈璇, 李嘉, 李斌, 邹学奇, 蔡飞超. 基于Kriging的多阶段加点策略及离心叶轮汽蚀优化[J]. 西北工业大学学报 |
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CHEN Xuan, LI Jia, LI Bin, ZOU Xueqi, CAI Feichao. The multi-stage adding strategy on Kriging and applied to cavitation optimization of centrifugal impeller[J]. Journal of Northwestern Polytechnical University |
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| 基于Kriging的多阶段加点策略及离心叶轮汽蚀优化 |
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| 陈璇1, 李嘉2, 李斌2, 邹学奇3, 蔡飞超1 |
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1. 西北工业大学 动力与能源学院, 陕西 西安 710072;
2. 长安大学 工程机械学院, 陕西 西安 710064;
3. 中国航发湖南动力机械研究所, 湖南 株洲 412002 |
| 摘要: |
| 为了实现燃油离心泵汽蚀特性智能优化设计,提出一种基于Kriging的多阶段主动学习加点策略。重点是建立3个阶段的加点策略,并明确各阶段加点策略的切换判据。基于一维函数、多维函数等测试函数,与单加点策略对比以验证多阶段主动学习加点策略的有效性。进而,以某型燃油离心泵为例,完成所提出加点策略在其汽蚀特性的优化应用。测试函数算例结果表明:多阶段主动学习加点策略达到相同精度所需时间稍长于单MSE策略,优于单EI策略与单CV策略;但相比单MSE策略,全局最优解局部精度更高。离心泵汽蚀特性优化结果表明:优化泵进口处压力损失降低且进口处回流、旋涡等局部流动减弱,蜗壳内压力梯度增大且其出口处旋涡流动减弱;优化泵的汽蚀系数提高30.83％,汽蚀余量下降9.14％,汽蚀比转数下降7.17％,泵内气体含量下降17.27％,所提出的方法有效地提高了离心泵的抗汽蚀性能。 |
| 关键词:
燃油离心泵
汽蚀特性
Kriging
加点策略
优化设计
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| The multi-stage adding strategy on Kriging and applied to cavitation optimization of centrifugal impeller |
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| CHEN Xuan1, LI Jia2, LI Bin2, ZOU Xueqi3, CAI Feichao1 |
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1. School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China;
2. School of Construction Machinery, Chang'an University, Xi'an 710064, China;
3. AECC Hunan Power-Plant Research Institute, Zhuzhou 412002, China |
| Abstract: |
| In order to realize the intelligent optimization design of cavitation performance of fuel centrifugal pump, a multi-stage active learning adding strategy based on Kriging is proposed. The focus is to establish the three-stage adding strategy by using MSE, EI and CV, and clarify the switching criteria for each stage. Based on the test functions such as one-dimensional function and multi-dimensional function, it is compared with the single-stage adding strategy to verify the effectiveness of the proposed strategy. Furthermore, for a certain type of fuel centrifugal pump, the optimization application of the proposed strategy in its cavitation characteristics is completed. The result of the test function calculation shows that the proposed strategy takes slightly longer to achieve the same accuracy than MSE, which is better than EI and CV. However, compared with MSE, the local accuracy of the global optimal solution is higher. The result of centrifugal pump case shows that the pressure loss at the inlet of the optimized pump decreases, the local flow such as return flow and vortex at the inlet is weakened, the pressure gradient and the vortex flow in the volute weakens. Moreover, the cavitation coefficient of the optimized pump is increased by 30.83％, the NPSH allowance is reduced by 9.14％, the cavitation ratio is reduced by 7.17％, and the gas content in the pump is reduced by 17.27％. Thus, the proposed method improves the cavitation performance of the centrifugal pump effectively. |
| Key words:
aero-fuel centrifugal pump
cavitation performance
Kriging modeling
adding strategy
optimization design
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| 收稿日期: 2023-04-12
修回日期:
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| DOI: 10.1051/jnwpu/20244230467 |
| 基金项目: 航空发动机及燃气轮机基础科学中心项目(P2022-A-V-001-001)资助 |
| 通讯作者: 李嘉(1989—),副教授 e-mail:lijia@chd.edu.cn
Email：lijia@chd.edu.cn |
| 作者简介: 陈璇(1989—),博士研究生
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| 作者相关文章 |
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| 陈璇 在本刊中的所有文章 |
| 李嘉 在本刊中的所有文章 |
| 李斌 在本刊中的所有文章 |
| 邹学奇 在本刊中的所有文章 |
| 蔡飞超 在本刊中的所有文章 |
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