Accurate Prediction of Loss Using High Fidelity Methods

Abstract

Further improvements in aero-engine efficiencies require accurate prediction of flow physics and incurred loss. Currently, the computational requirements for capturing these are not known leading to inconsistent loss predictions even for scale-resolving simulations depending on the chosen convergence criteria. This work investigates two aspects of loss generation using high-fidelity simulation. In the first case study we look at the effect of numerical resolution on capturing viscous dissipation by simulating a Taylor-Green vortex canonical flow. The second case study focuses on the effect of flow physics on loss generation and uses a transitional compressor cascade subjected to freestream turbulence.