Effect of Heat Loss on Laminar Flamelet Species Concentration

作     者：Marco Boccanera Diego Lentini 

作者机构：Dipartimento di Ingegneria Meccanica e AerospazialeSapienza Università di Roma 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2016年第25卷第5期

页      面：418-423页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0825[工学-航空宇航科学与技术] 0702[理学-物理学] 

主　　题：Turbulent Combustion Heat Transfer Laminar Flamelets Hydrocarbon Combustion Aeroengines Gas Turbines 

摘      要：The effects of heat loss on the structure of laminar flamelets,which are the constitutive elements of turbulent flames under the most common operating conditions,are investigated for typical aeronautical gas-turbine operating conditions at *** magnitude of heat loss is quantified via the enthalpy defect measured with respect to an adiabatic flame.A procedure to generate laminar flamelets with an assigned enthalpy defect at the boundaries is devised and applied to nonpremixed propane/air flames,as propane reproduces the essential features of higher hydrocarbon *** is found,contrary to commonly held beliefs,that the enthalpy defect has a significant effect on the concentration not only of minor species,but also of main reaction *** effects are found in general to be more pronounced for fuel-rich *** impact is anticipated on the formation rate of nitric *** effects of scalar dissipation rate are also discussed.