Towards the Large-Eddy Simulation of a full engine: Integration of a 360 azimuthal degrees fan, compressor and combustion chamber. Part II: Comparison against stand-alone simulations

Unsteady simulations of various components a gas-turbine engine are often carried out independently and only share averaged quantities at the component interfaces. In order to study impact interactions between components, this work compares results from sectoral stand-alone fan, compressor annular combustion chamber DGEN-380 demonstrator take-off conditions against an integrated 360 azimuthal degrees large-eddy simulation with over 2.1 billion cells all previously listed components. Note that, works transonic generates upstream-propagating shock that interacts fan modifying shape its wake respect simulation. Furthermore, is seen as tone in pressure spectra half impeller blade passing frequency forward region engine. aft region, time-averaged fields overall similar but show deviation position hot-spot exit due addition diffuser. Pressure fluctuations generated captured tones temperature blade-passing harmonics well increase root-mean-square pressure.