基于代理模型的航空燃油泵空化性能分析
收稿日期: 2015-10-12
修回日期: 2015-12-14
网络出版日期: 2016-04-11
基金资助
国家自然科学基金（51479002）；航空科学基金（2013ZC09001）
Analysis of cavitation performance of an aviation fuel pump based on surrogate model
Received date: 2015-10-12
Revised date: 2015-12-14
Online published: 2016-04-11
Supported by
National Natural Science Foundation of China (51479002); Aeronautical Science Foundation of China (2013ZC09001)
基于代理模型的整体敏感度分析方法，对影响燃油泵空化性能的结构参数（即诱导轮出口安放角和叶轮进口安放角）进行了分析，得到影响泵空化性能的主要因素，并对燃油泵的结构参数进行了优化。研究中，采用基于旋转修正的k-ε湍流模型及Zwart空化模型对优化前后的燃油泵空化流场进行了计算。结果表明：在一定变化范围内，叶片安放角对燃油泵的外特性影响较小，对燃油泵空化特性影响较大；其中，叶轮进口安放角对燃油泵空化性能有较大影响，随叶轮进口安放角的增大，燃油泵空化性能呈先下降后上升的变化趋势；优化后诱导轮出口安放角和叶轮进口安放角分别增大了4.4°和3.2°，满足Pareto最优解，燃油泵的空化性能较优化前提高了18%左右。
熊英华 , 刘影 , 赵兴安 , 孙华伟 , 王国玉 , 高德明 . 基于代理模型的航空燃油泵空化性能分析[J]. 航空学报, 2016 , 37(10) : 2952 -2960 . DOI: 10.7527/S1000-6893.2016.0102
In order to investigate the influence of the structure parameters (which are blade angle of inducer at exit and blade angle of impeller at inlet) of fuel pump on the cavitation performance of an aviation fuel pump, the global sensitivity analysis method that based on the surrogate method was applied, and also, the structure parameters of fuel pump had been optimized. In the numerical simulation, the local swirling correction turbulence model deriving from the standard k-ε two-equation model and Zwart cavitation model were applied. The results show that in a certain range of variation, the blade angle has a greater influence on the cavitation performance, instead of the external characteristics of fuel pump. Compared to the outlet angle of inducer, the inlet angle of impeller affects the cavitation performance more significantly. With the increase of the outlet angle of inducer, the cavitation performance firstly decreases and then increases. Based on the Pareto optimal solutions, the optimized outlet angle of inducer and inlet angle of impeller increase by 4.4°and 3.2°respectively, with the cavitation performance increasing by 18%.
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