Calculate Thermal Field And Analyze Structural Field For Binary Cooling Turbine Blades

Binary cooling turbine blade is very important component of gas turbine. The working surrounding of binary cooling turbine blade is high temperature, high pressure and high speed, and its loads contain aerodynamic load, heat load and centrifugal Load. In order to ensure the stability and reliability of the gas turbine during its working time, it is urgent to analyze strength and estimate life for binary cooling turbine blade. In this paper, for the gas turbine blade, thermal field is calculated and strength field is analyzed.The main content and results are as follows:Firstly, in the modeling software UG Workbench, developed sections with same blade body height along the blade body, Chose the blade body between two sections with same blade body height as the researching object, enveloped the blade body with twenty nodes, developed transforming function between physical coordinate system and dummy coordinate system, established mapping between physical nodes and dummy nodes, transformed the blade body with complicated structure to regular square cube, calculated the temperature value of any finite node with interpolation in regular square cube in dummy coordinate system designing program C++, wrote the nodes temperature into the .cdb file of ANSYS, analyzed the thermal field of binary cooling turbine blade.Secondly, in the FEA software ANSYS Workbench, for the binary cooling turbine blade, loaded the centrifugal load and aerodynamic load, analyzed the strength field, and got the distribution of stress.Finally, changed the thermal stress that is calculated in ANSYS to thermal load, loaded the thermal load for the binary cooling turbine blade, loaded the centrifugal load and aerodynamic load, analyzed the strength field, and got the distribution of stress in approximative working surrounding.