Numerical Analysis of Conjugated Heat Transfer and Thermal Stress Distributions in a High-Temperature Ni-Based Superalloy Turbine Rotor Blade

This paper establishes a multidisciplinary method combining conjugate heat transfer (CHT) and thermal stress for high-temperature Ni-based superalloy turbine rotor blade with integrated cooling structures. A calculation is performed to investigate the coolant flow characteristics, transfer, of under rotating stationary conditions understand effects rotation on design blade. Furthermore, maximum resolved shear among 30-slip systems corresponding dominant slip system are obtained predict deformation tendency by employing crystal plasticity finite element (CPFEM) considering specified anisotropic material (GTD-111). The results show that forces rotation, including centrifugal Coriolis forces, their induced buoyancy force, alter field thus affect blade’s distribution compared condition. temperature reduced 5% 21% condition, respectively. Compared condition more uniform, especially suction side. In addition, root connecting hub, film holes near leading-edge region at root, mid-chord surface, grooved tip easily damaged enormous interface effect different types two conditions. this work, it was feasible use cascade test analyze dynamic analysis based CPFEM can provide superior level than CHT characteristics