Turbine blade temperature calculation and life estimation-a sensitivity analysis

作     者：Majid Rezazadeh Reyhani Mohammad Alizadeh Alireza Fathi Hiwa Khaledid 

作者机构：Amirkabir University of Technology(Tehran Polytechnic)Tehran15875-4413Iran School of Mechanical EngineeringCollege of EngineeringUniversity of TehranTehran4563-11155Iran K.N.T UniversityTehran19697-64499lran Sharif Universiry of TeclmologyTehran11365-11155Iran 

出 版 物：《Propulsion and Power Research》 (推进与动力（英文）)

年 卷 期：2013年第2卷第2期

页      面：148-161页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Conjugate heat transfer Life assessment Sensitivity analysis Gas turbine Blade 

摘      要：The overall operating cost of the modern gas turbines is greatly influenced by thedurability of hot section components operating at high *** turbine operatingconditions,some defects may occur which can decrease hot section *** the present paper,methods used for calculating blade temperature and life are demonstrated and *** methods,a set of sensitivity analyses on the parameters affecting temperature and life ofa high pressure,high temperature turbine first stage blade is carried *** are:(1)blade coating thickness,(2)coolant inlet pressure and temperature(asa result of secondary air system),and(3)gas turbine load *** show thatincreasing thermal bamier coating thickness by 3 times,leads to rise in the blade life by *** addition,considering inlet cooling temperature and pressure,deviation in temperaturehas greater effect on blade *** of the interesting points that can be realized from theresults is that 300 hours operation at 70%load can be equal to one hour operation atbase load.