2024/02/29 by Christian Morsbach, Morsbach, Christian, Bjoern F. Klose +5
Computer Science · Engineering · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Modeling and Simulation Systems #Real-time simulation and control systems #Turbomachinery Performance and Optimization
paper · pdf · doi:10.48550/arxiv.2403.00146
openalex publication_date 2024/02/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We revisit recently published high-fidelity implicit large eddy simulation datasets obtained with a high-order discontinuous Galerkin spectral element method and analyse them using Proper Orthogonal Decomposition (POD) as well as Spectral Proper Orthogonal Decomposition (SPOD). The first configuration is the MTU T161 low-pressure turbine cascade with resolved end wall boundary layers in a clean version and one with incoming turbulent wakes. We focus on the behaviour of the laminar separation bubble and the secondary flow system and how these phenomena are affected by incoming wakes. The second configuration is a transonic compressor cascade in which we analyse the unsteady behaviour of the shock wave boundary layer interaction. Throughout the paper, we try to discuss not only the flow physics but also insights into how the modal decomposition techniques can help facilitate understanding and where their limitations are.