Parameterised model of 2D combustor exit flow conditions for hpt simulations

Authors

Marius Schneider - TU Darmstadt
Heinz-Peter Schiffer - TU Darmstadt
Knut Lehmann - Rolls-Royce Deutschland

Abstract

An algorithm is presented generating a complete set of inlet boundary conditions for RANS CFD of high pressure turbines to investigate their interaction with lean and rich burn combustors. The method shall contribute to understanding sensitivities of turbine aerothermal performance in a systematic approach. The boundary conditions are based on a set of input parameters controlling velocity, temperature and turbulence fields. All other quantities are derived from operating conditions and additional modelling assumptions. The algorithm is coupled with a CFD solver by applying the generated profiles as inlet boundary condition. The successive steps to derive consistent flow profiles are described and results are validated against flow fields extracted from combustor CFD.