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1、第41卷第7期哈尔滨工业大学学报Vol141No172009年7月JOURNALOFHARBININSTITUTEOFTECHNOLOGYJuly2009两种乘波前体/进气道一体化设计与性能研究肖洪,吴丁毅,刘振侠,廉小纯(西北工业大学动力与能源学院,西安710072,xhong@nwpu.edu.cn)摘要:建立了由激波面推算波后流场的计算方法,设计了能够产生三道封闭圆锥激波的相交锥模型.以此为基础生成了具有三道封闭激波的乘波前体和具有一道封闭激波两道平面激波的乘波前体对比模型.分别对两种乘波前体与进气道一体化模型进行了全三维流场计算,
2、研究了两模型在不同飞行状态下的气动性能.结果表明三道封闭激波乘波前体模型相比对比模型具有较大的气动性能优势.在进气道进口截面处边界层厚度几乎相等的情况下,流量系数提高了314%,总压恢复系数提高了8%,进气道进口截面流场不均匀度降低了818%.相比低于设计马赫数和负攻角,两模型在高于设计马赫数和正攻角有较大的封闭激波飞行范围.CFD计算结果表明,对于乘波前体设计马赫数应低于实际飞行马赫数,并且宜采用正攻角飞行.关键词:乘波;前体;流量系数;总压恢复;流场不均匀度中图分类号:V21113文献标识码:A文章编号:0367-6234(2009)
3、07-0150-05Integrateddesignandperformanceresearchofwaveriderforebody/inletXIAOHong,WUDing2yi,LIUZhen2xia,LIANXiao2chun(SchoolofPowerandEnergy,NorthwesternPolytechnicalUniversity,Xi’an710072,xhong@nwpu.edu.cn)Abstract:Amethodtocomputetheflowfieldfromgivenshockwavewasdevelop
4、ed,andintersectedconesthatcangeneratethreeclosedshockwavesweredesigned.Basedontheintersectedcones,awaveriderfore2bodythatcangeneratethreeattachedshockwavesaswellasacomparativereferencewaveriderforebodythatcangenerateoneattachedshockwaveandtwoplaneshockwavesweredesigned.To
5、betterunderstandtheper2formanceoftwoforebodies,three2dimensionalflowfieldsimulationoftwoforebodiesintegratedwithhypersonicinletwasconducted.Thecomputationalresultsshowthattheperformanceoforiginalwaveriderismuchbetterthanthatofcomparativereferencewaverider.Comparedwiththec
6、omparativereferencemodel,theflowcoeffi2cientandtherecoverycoefficientoftotalpressureareincreasedby3.4%and8%,respectively.Thedistor2tioncoefficientofinletisdecreasedby8.8%.Twowaveriderforebodiesintegratedwithhypersonicinletshowbetterperforemanceinhighmachnumberandpositivea
7、ttackangleregionthanthatinlowmachnumberandnegativeattackangle.CFDpredictionsshowthatthedesignmachnumberofwaveriderforebodyshouldbelessthantheflightmachnumber,andthepositiveattackangleshouldbetakenforwaverider.Keywords:waverider;forebody;flowcoefficient;recoverycoefficient
8、oftotalpressure;distortioncoefficient乘波构型具有高升阻比、流场均匀和反设计文对两种具有不同类型激波系结构的乘波前体/的优势,已经逐渐成为航空航天领域高超声
