Experimental investigation and extended simulation of turbocharger non-adiabatic performance [Elektronische Ressource] / von Sameh Shaaban

Experimental investigation and extended simulation of turbocharger non-adiabatic performance VomFachbereichMaschinenbauderUniversitätHannoverzurErlangungdesakademischenGradesDoktorIngenieurgenehmigteDissertationvonMScEng.SamehShaabangeborenam01.02.1970inKairo,Ägypten2004 StichwortefürdieDokumentation:Turbolader,diabatischesVerhalten,Simulation,Radial verdichter,radialeTurbineKeywords:Turbocharger,nonadiabaticperformance,simulation,c entrifugalcompressor,radialturbine,microcompressor.1.Referent: Prof.Dr.Ing.J.Seume2.Referent: Prof.Dr.Ing.H.PucherTagderPromotion: 14.12.2004 iAbstract Turbochargingisnowadaysconsideredthemostcommonlyused methodofenginesupercharging.Oneoftheimportantfactorsaffectingth eturbochargerperformanceistheheattransferinsidetheturbochargerandfrom theturbochargertotheambient.Heattransfertakesplaceduetothehightemperature gradientbetweentheturbineandtheothercomponentsoftheturbochargeraswellas betweentheturbineandtheambient. This heat transfer causes underestimation of the measured compressorefficiencyandoverestimationoftheturbineefficiency.Thisresultsinaninaccurateestimationofthecompressorpowerandtheturbinepower.