氦气压气机叶型气动特性研究.pdf

《氦气压气机叶型气动特性研究.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第14卷第3期2014年1月科学技术与工程Vo1．14No．3Jan．20141671—1815(2014)03-0152—07ScienceTechnologyandEngineering⑥2014Sci．Tech．Engrg．氦气压气机叶型气动特性研究韩俊温风波王松涛(哈尔滨工业大学发动机气体动力研究中心，哈尔滨150001)摘要以高温气冷堆氦气轴流压气机叶型气动特性为研究对象，结合优化算法与现代流场模拟技术研究了氦气压气机叶型的设计特点和损失特性。数值模拟采用SST湍流模型和—Re0转捩模

2、型，考虑了氦气附面层转捩对叶型损失的影响。对比低速空气压气机叶型和CDA叶型，研究了具有低损失和宽广工作范围的氦气压气机叶片表面压力分布特点及其附面层发展特点。研究结果表明，优化叶型在保持设计工况下损失基本不变的情况，大幅度地增加了氦气叶型的低损失攻角范围，并减小了不同攻角时叶型的落后角。优化叶型在正攻角情况下，附面层转捩显著推迟，氦气压气机叶型损失得到有效控制。关键词高温气冷堆氦气压气机优化叶型附面层转捩中图法分类号TK473．8；文献标志码AHeliumaxialflowcompressor

3、isanimportantpartgion，tomaintainthedesignefficiencyessentiallytheofoneoftheHTGRBraytoncycleconversionde—sameorimprovedandtheresearchworkisstilltovice[14]．TheDhysicalcharacteristicsofheliumsuchdeepenandimprove．aslargeinadiabaticindexandspecificheatand

4、highTheheliumcompressorairfoildesignisoneoftheinsubsonicflightleadtoadirectresultoftheaseriesimportantpartofthedesignofacompressor．Fromtheshortbladegeometrycharacteristicsaswellasthelowviewoftheaircompressorairfoilcoursewiththedevel—Machnumberflowcha

5、racteristicsofaheliumcompres—opmentofcomputertechnology，theoptimizationalgo—soywhichbroughtdifficultiesandchallengestothede—rithmcombinedwithmodeiTlCFDtechnologyisanef-signofthecompressor．Fromthepublishedliterature，fectivemethodforturbomachineryresea

6、rchandgradu—fewliteratureinvolvingheliumcompressordesignde—allybepaidattentiontobyscholarsinthe21stcentu-tails，theheliumcompressorbasicallyfollowsthede—ry．Ithasagoodreferencevalueforthestudyofmod—signoftheaircompressorsystemandtakeexampleofelTlturbom

7、achinerydesignexperienceoutsidebeyondthedesignparametersthatdrawsaircompressor，airfoilthenewairfoildesignoptimization．tvDechaI．acteristicsof1osscalculationmethod[—吕。WeacceptthemodernCFDtechnologycombined．Domesticresearchfollowingthenational”863”witho

8、ptimizationalgorithm．Aimingatheliumcorn-pressorworkingconditionsandthetypeofsurfacepres-project，thehotspotofheliumcompressortransfertosuredistributionaswellasthedevelopmentofthehowtoreducetheseriesofheliumcompressortohighboundarylayercharacteristicso