4 papers
Coherent structures modeling in stenotic transitional flow via resolvent analysis
Alexandre Villié, Simon Demange, Kilian Oberleithner
This study investigates the capability of linear modeling to characterize the transitional dynamics in an axisymmetric stenosis and attempts a low-order representation of the turbu…
Uncovering Turbulent Dynamics in Stenotic Flows from 4D-flow MRI Measurements via Resolvent Analysis and Data Assimilation
Alexandre Villié, Simon Demange, Hannes Dillinger +2
This study presents a hybrid experimental and computational framework that couples in vitro 4D phase-contrast magnetic resonance imaging (4D-flow MRI) measurements with data assimi…
Identification of structures driving trailing-edge noise. Part II -- Numerical investigation
Zhenyang Yuan, Simon Demange, Kilian Oberleithner +2
The aim of the present work is to investigate the mechanisms of broadband trailing-edge noise generation to improve prediction tools and control strategies. We focus on a NACA 0012…
Identification of structures driving trailing-edge noise. Part I -- Experimental investigation
Simon Demange, Zhenyang Yuan, Simon Jekosch +4
Trailing-edge (TE) noise is the main contributor to the acoustic signature of flows over airfoils. It originates from the interaction of turbulent structures in the airfoil boundar…