The Institute of Gas Turbines and Aerospace Propulsion at Technische Universitait Damstaxlt conducts research projects in the field of“combustor turbine interaction”(CTI).This paper presents numerical studies on the...The Institute of Gas Turbines and Aerospace Propulsion at Technische Universitait Damstaxlt conducts research projects in the field of“combustor turbine interaction”(CTI).This paper presents numerical studies on the interaction between novel combustion concepts and conventional“high pressure turbine”(HPT)stages.In order to obtain higher efficiency and reduce emissions of jet engines,it is necessary to apply innovative and revolutionary technologies.The most promising technical solutions are based on the cycle processes,employing“pressure gain combustion”(PGC)methods PGC methods provide a significant thermal efficiency enhancement and low NO_(x)-emission rates at the same time.The investigations presented in this paper give information on the integrability of revolutionary combustion concepts into conventional engine architecture.This paper aims at providing insight into the numerical modelling of the transient behaviour of prospective combustion outflow and its influence on the operation of HPTs,especially on the first stage.The focus is on the aerodynamic effects and loss mechanisms within the blade passage.The interaction between the two components plays an important role.To study the performance under new conditions,an engine-like HPT geometry is used.This study reveals a decrease in turbine efficiency with transient inflow conditions compared to a steady-state inflow case.The decrease is primarily due to the interation between transient inflow and the loss mechanisms in the turbine.The presented research was done as part of the project“Technologien fir REVolutionire Arbeits Prozesse”(TREVAP)展开更多
基金The computational work is part of the joint project TREVAP sponsored by the Geman Luffahrtforschung-sprogramm(LuFo)under grant 20E1505D.
文摘The Institute of Gas Turbines and Aerospace Propulsion at Technische Universitait Damstaxlt conducts research projects in the field of“combustor turbine interaction”(CTI).This paper presents numerical studies on the interaction between novel combustion concepts and conventional“high pressure turbine”(HPT)stages.In order to obtain higher efficiency and reduce emissions of jet engines,it is necessary to apply innovative and revolutionary technologies.The most promising technical solutions are based on the cycle processes,employing“pressure gain combustion”(PGC)methods PGC methods provide a significant thermal efficiency enhancement and low NO_(x)-emission rates at the same time.The investigations presented in this paper give information on the integrability of revolutionary combustion concepts into conventional engine architecture.This paper aims at providing insight into the numerical modelling of the transient behaviour of prospective combustion outflow and its influence on the operation of HPTs,especially on the first stage.The focus is on the aerodynamic effects and loss mechanisms within the blade passage.The interaction between the two components plays an important role.To study the performance under new conditions,an engine-like HPT geometry is used.This study reveals a decrease in turbine efficiency with transient inflow conditions compared to a steady-state inflow case.The decrease is primarily due to the interation between transient inflow and the loss mechanisms in the turbine.The presented research was done as part of the project“Technologien fir REVolutionire Arbeits Prozesse”(TREVAP)
