1、南京航空航天大學(xué)碩士學(xué)位論文回流燃燒室彎曲段壁面復(fù)合冷卻特性的研究姓名：石蕊申請學(xué)位級別：碩士專業(yè)：熱能工程指導(dǎo)教師：楊衛(wèi)華201012回流燃燒室彎曲段壁面復(fù)合冷卻特性的研究IIABSTRACTWiththemodernaeroengineperfmanceimprovingthetemperaturepressureincombustionchambergraduallyincreaseononehtheairinchamberuse

2、dfcombustionismemewhichleadstotheairinchamberusedfcoolingislesslessontheotherhbecauseoftheairtemperaturepressurefromtheaircompressisincreasingsothetemperatureofcoolingairisalsoincreasingthisisnotpropitioustothechambercoo

3、lingsowhethertheflametubewallcanbecooledeffectivelyhasalreadybeenapivotaltechnologyfthehightemperaturehoistcombustionchamberofthehighpoweredaeroengine.Compoundcoolingisanhighlyefficientcoolingmethoditcombinestheconvectiv

4、eheattransferfilmcoolingbetweenthehightemperaturewallcoolingairwhichexerttheirsuperiitysoitmakesthecoolingeffectmuchbetterthanthesinglefilmcooling.Nowthecompoundcoolingiswidelyusedinthecoolingofflametubewallinthelargesca

5、leturbinefanenginefthereverseflowcombustionchamberintheturbineshaftenginethetotalamountofairismuchlessthanthelargescaleturbinefanengineespeciallytheairusedfcoolingismuchmeless.Withthepowerweightratiooftheturbineshaftengi

6、neimprovingthetraditionalsinglefilmcoolingisfarfromenoughfthefuturehightemperaturehoistcombustionchambercoolingsosearchingnewcompoundcoolingtechnologyisnecessaryfthecoolingofreverseflowcombustionchamber.Basedonthisdiffer

7、entcoolingconfigurationsincurvedsectionofreverseflowcombustionchamberhavebeendesignedinthispapertheseincludeimpingementreversedconvection(withpinfinnot)filmcoolingconfigurationimpingementeffusioncoolingconfigurationsoont

8、hecoolingefficiencydisgecoefficienthavebeenstudiednumericallyexperimentallytheanalysisoftheeffectsofblowingratioconfigurationparameteronthecoolingefficiencydisgecoefficienthavebeenshowedResultsshowthat:（1）Fconfigurationo

9、fimpingementreversedconvection(withpinfinnot)filmcoolingincurvedsectiontheefficiencyofcompoundcoolingincreaseswiththeincreaseoftheblowingratioatthesamewallpositionTheefficiencyofimpingementpinfinreversedconvectionfilmcoo

10、lingincurvedsectionwithpinfinsisbetterthanthatwithoutpinfinsespeciallywhentheblowingratioissmallThenumberofrowsofpinfinsarrangementofpinfinshavelittleeffectoncoolingefficiencyAtthesameblowingratioimpingementdistancehasli