流体机械2023年2月78第51卷第2期收稿日期:2022-01-27修稿日期:2022-03-01基金项目:中国博士后科学基金资助项目(176911);江苏省博士后科研资助计划项目(1701054B)doi:10.3969/j.issn.1005-0329.2023.02.011应用技术基于ISIGHT平台的S3525翼型优化研究李忠,周俊杰,马存志,丁磊(江苏大学能源与动力工程学院,江苏镇江212013)摘要:为了给双向轴流式叶轮提供水动力特性较高的优秀翼型,基于ISIGHT多学科优化平台,结合改进后适用于S翼型重构的CST参数化方法和LatinHypercube优化方法构建了自动寻优平台,并对优化前后翼型的水动力特性进行对比分析。结果表明:优化翼型的适用攻角范围明显拓宽,升阻比及升力系数均有效提升,最优升阻比较原始翼型提升了45.5%。优化翼型的损失增幅从5°攻角处开始变大,相较于原型延迟1°,同时减小了翼型上翼面前缘区域处的逆压梯度、抑制了该区域内的流动分离现象。研究结果有助于推进双向轴流式水力机械性能的提升,同时可为类似研究提供有益借鉴。关键词:S3525翼型;CST参数化;水力性能;流动分离中图分类号:TH12文献标志码:AOptimizationresearchofS3525hydrofoilbasedonISIGHTplatformLIZhong,ZHOUJunjie,MACunzhi,DINGLei(CollegeofEnergyandPowerEngineering,JiangsuUniversity,Zhenjiang212013,China)Abstract:Inordertoprovideexcellenthydrofoilswithhighhydrodynamiccharacteristicsforbi-directionalaxialimpellers,thispaperbuildsanautomaticoptimizationplatformbasedontheISIGHTmultidisciplinaryoptimizationplatform,combiningtheimprovedCSTparameterizationmethodsuitableforS-airfoilreconfigurationandtheLatinHypercubeoptimizationmethod,andthencomparesthehydrodynamiccharacteristicsofthehydrofoilsbeforeandafteroptimization.Thestudyshowsthattherangeoftheapplicableangleofattackoftheoptimizedhydrofoilissignificantlywidened,andthelift-dragratioandliftcoefficientareeffectivelyimproved,andtheoptimizedlift-dragratiois45.5%higherthanthatoftheoriginalhydrofoil.Theoptimizedhydrofoilhasalargerlossincreasefrom5°angleofattack,withadelayof1°comparedtotheprototype,thebackpressuregradientattheleadingedgeoftheuppersurfaceisreducedandtheflowseparationphenomenoninthisareaisalsosuppressed.Theresultsofthestudycanhelpimpr...