1、南京航空航天大學(xué)碩士學(xué)位論文跨音速前掠風(fēng)扇的數(shù)值設(shè)計(jì)與分析姓名：魏利軍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：航空宇航推進(jìn)理論與工程指導(dǎo)教師：梁德旺黃國(guó)平20080101跨音速前掠風(fēng)扇的數(shù)值設(shè)計(jì)與分析iiAbstractTurbinefanengineisthemainjetthrusteroftoday’saircraft.Withthedevelopmentofenginedesigntechnologyaircraftrequirementthe

2、designoffanisgoingtothetargetofhigherpressureradioefficiencystablywkingscopeasavitalptionincompressdesign.Fwardsweptcanimprovetheshockwavestructurebyweakeningtheshockwavereducingtheshockwavelossitimprovestheaerodynamicpe

3、rfmanceofrot.Inthispaperlinearfwardsweptisusedfthedesignofasizeaxialfan.Itisindicatedduringtheinvestigationwkthatfwardsweptwillaffecttheaerodynamicperfmanceofcompressblade.Ageneralsizeaxialfanwasdesignedaccdingtothecoope

4、ratwithperfmancegoalofpressureradio1.8adiabaticefficiency0.86stablywkingscope15%.Inthepapertherotperfmancegoalwasfixedonpressureradio:1.9adiabaticefficiency:0.9stablywkingscope:15%basedonthediffuserdesigntechnology.Inder

5、tomeettheperfmancetargetappropriatebladelinebladethicknessdistributionfwardsweptwasusedfthefandesignbecauseoftheunchangeablegivensizerotatespeedinletconditionoffan.Numericalsimulationwasdoneonfivedifferentrotwithfwardswe

6、ptangleof0、0.5、2、5、8degree.Fromthenumericalsimulationresultsitwasstudiedhowfwardsweptaffecttheaerodynamicperfmanceofcompressblade.Resultsindicatedthatfwardsweptinfluencetheshockwavestructureimprovethepressureradioadiabat

7、icefficiencystablywkingscope.Numericalsimulationindicatedthatthepressureratioofthe2degreefwardsweptrotwas2.065efficiencywas0.9285surgemarginwas15.8%.Theseperfmanceparametersareallachieveexceedthedesigntarget.Aprogramofax

8、ialfandesigngridautomaticcreationwasdevelopedestablishedthefoundationfthefurtherstudies.Thetechnologyofmicroturbineenginehasdevelopedrapidlyduringtherecent10years.Considerablethrustmassradioisitsoutstingmeritbuthighfuelc

9、onsumptionisitsdemerit.Usingthemicroturbinefancanreduceitsfuelconsumptioneffectively.Consequentlyonthefoundationofthedesignedgeneralsizefwardsweptfanthispapermadetherotdwindleinsizeusingthelawwiththesameflangevelocitytot

10、hesizewith73mmdiameter115000rminrotatespeed.Comparingwiththeflowperfmancethispaperanalyzedtheinfluenceofmicromationontherot’saerodynamicperfmance.Aftermicromationobviousflowviscosityturneduppassageblockingbecomeseriousth