本文選題：燃油泵 + 代理模型�。� 參考：《航空學報》2016年10期

【摘要】：基于代理模型的整體敏感度分析方法,對影響燃油泵空化性能的結(jié)構(gòu)參數(shù)(即誘導(dǎo)輪出口安放角和葉輪進口安放角)進行了分析,得到影響泵空化性能的主要因素,并對燃油泵的結(jié)構(gòu)參數(shù)進行了優(yōu)化。研究中,采用基于旋轉(zhuǎn)修正的k-ε湍流模型及Zwart空化模型對優(yōu)化前后的燃油泵空化流場進行了計算。結(jié)果表明:在一定變化范圍內(nèi),葉片安放角對燃油泵的外特性影響較小,對燃油泵空化特性影響較大;其中,葉輪進口安放角對燃油泵空化性能有較大影響,隨葉輪進口安放角的增大,燃油泵空化性能呈先下降后上升的變化趨勢;優(yōu)化后誘導(dǎo)輪出口安放角和葉輪進口安放角分別增大了4.4°和3.2°,滿足Pareto最優(yōu)解,燃油泵的空化性能較優(yōu)化前提高了18%左右。
[Abstract]:Based on the overall sensitivity analysis method of the agent model, the structural parameters that affect the cavitation performance of the fuel pump are analyzed, i.e., the angle of placement at the outlet of the induction wheel and the angle of the inlet of the impeller, and the main factors affecting the cavitation performance of the pump are obtained.The structure parameters of fuel pump are optimized.In the study, the cavitation flow field of the fuel pump before and after optimization was calculated by using the k- 蔚 turbulence model based on rotation correction and the Zwart cavitation model.The results show that the blade angle has little effect on the external characteristics of the fuel pump and has a greater effect on the cavitation characteristics of the fuel pump, and the impeller inlet angle has a great effect on the cavitation performance of the fuel pump.With the increase of impeller inlet angle, the cavitation performance of fuel pump decreases first and then increases, and after optimization, the angle of inducer exit and impeller inlet increases 4.4 擄and 3.2 擄, respectively, which satisfies the Pareto optimal solution.The cavitation performance of fuel pump is improved by about 18% compared with that before optimization.
【作者單位】： 北京理工大學機械與車輛學院;中航工業(yè)集團公司南京機電液壓工程研究中心;
【基金】：國家自然科學基金(51479002) 航空科學基金(2013ZC09001)~~
【分類號】：V228.1
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本文編號：1763962