涡轮出口气流角对低速风力引射器流场影响的数值研究

推进技术 ›› 2015, Vol. 36 ›› Issue (12): 1809-1816.

涡轮出口气流角对低速风力引射器流场影响的数值研究

韩万龙,颜培刚,韩万金,何玉荣

哈尔滨工业大学能源学院，黑龙江哈尔滨150001,哈尔滨工业大学能源学院，黑龙江哈尔滨150001,哈尔滨工业大学能源学院，黑龙江哈尔滨150001,哈尔滨工业大学能源学院，黑龙江哈尔滨150001

发布日期:2021-08-15
作者简介:韩万龙(1984—)，男，博士生，研究领域为叶轮机械气动热力学。
基金资助:
国家自然科学基金(51121004)。

NumericalResearchonEffectsofTurbineOutletFlow

SchoolofEnergyScienceandEngineering，HarbinInstituteofTechnology，Harbin150001，China,SchoolofEnergyScienceandEngineering，HarbinInstituteofTechnology，Harbin150001，China,SchoolofEnergyScienceandEngineering，HarbinInstituteofTechnology，Harbin150001，China and SchoolofEnergyScienceandEngineering，HarbinInstituteofTechnology，Harbin150001，China

Published:2021-08-15

摘要/Abstract

摘要： 为了开发先进的具有广泛适用性的低速风力涡轮，采用涡扇发动机喷管引射技术设计了双涵道风力涡轮，以新型低速引射式风力涡轮的引射混合器为研究对象，采用CFX商用软件基于RANS方程和k-Epsilon湍流模型，数值研究了涡轮出口气流角对风力引射器混合性能的影响。研究结果显示，涡轮出口气流与轴向夹角由0°增至30°，引起了波瓣后侧流向涡量迁移，最大正交涡量降低了1/3，波瓣内侧中部分离对涡与槽道吸力侧分离区汇合，风力引射器内流道总压损失从2.4%增大至5%，此夹角大于10°时外流场对称结构消失并失稳。

关键词: 风力引射器；涡轮出口气流角；流向涡；正交涡；风力涡轮中图分类号:V231.3文献标识码:A文章编号:1001-4055(2015)12-1809-08DOI:10.13675/j.cnki.tjjs.2015.12.008

Abstract: Theturbofanenginenozzleejectortechnologywasadoptedtodesignahigh-efficiencylowspeedwindturbinewiththedoublebypassforabroaderareasintheworld.Theaerodynamiccharacteristicsofthewind-ejectorofthenewwindturbinewerenumericallyresearchedonturbineoutletflowanglechangingbasedonReyn.olds-averagedNSequationsandk-Epsilonturbulencemodel，usingcommercialsoftwareCFX.Resultsshowthat，astheanglebetweenturbineoutletflowandtherotationaxisincreasedfrom0°to30°，thepositivevorticityofthestream-wisevorticepairsmigratedtothenegativevorticity，themaximumnormalvorticitywasgraduallyreducedby1/3，theseparationvortexpairsadhesionofthelobesweregraduallyforcedtomixwiththeseparationvorticesnearthesuctionsurfaceofthechannels，thetotalpressurelossinthelobesofthewind-ejectorin.creasedfrom2.4%to5%，andiftheanglewasgreaterthan10°，theflowstabilityofthewindturbineoutflowfieldrapidlydisappeared.

Key words: Wind-ejector；Turbineoutletflowangle；Stream-wisevortice；Normalvortice；Windtur.bine

韩万龙,颜培刚,韩万金,何玉荣. 涡轮出口气流角对低速风力引射器流场影响的数值研究[J]. 推进技术, 2015, 36(12): 1809-1816.

HANWan-long,YANPei-gang,HANWan-jin,HEYu-rong. NumericalResearchonEffectsofTurbineOutletFlow[J]. Journal of Propulsion Technology, 2015, 36(12): 1809-1816.

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