A Decoupled CHT Procedure: Application and Validation on a Gas Turbine Vane with Different Cooling Configurations

Gas turbine performance improvement is strictly linked to the attainment of higher maximum temperature, hence heat load management becomes an essential activity. This paper presents a decoupled procedure aimed to predict cooling performances and metal temperatures of gas turbine blades and nozzles: needed inputs are evaluated by different tools (CFD, in-house fluid network solver, thermal FEM). The procedure is validated on two different test cases: an internally cooled vane (Hylton et al.[1]), and an internally and film cooled vane (Hylton et al.[2]). Metal temperature and adiabatic effectiveness distributions are compared against experimental data and results from a fully 3D coupled CHT CFD analysis.