From the 1 of 6 linked papers with an AI index.
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Reversal of a flat plate into its wake: a minimal model for wake capture
Dirk de Boer, Abel-John Buchner
The paper studies how the wake left by a flat plate moving forward influences the drag when the plate reverses direction, showing that the distance traveled before reversal control…
Parametric Reduced-Order modeling and Closed-Loop Control of Tandem-Cylinder Wakes
Tea Vojkovic, Dimitris Boskos, Abel-John Buchner
The flow around two circular cylinders arranged in a tandem exhibits complex wake interactions that lead to amplified unsteady loads, particularly in the co-shedding regime where a…
Transonic Buffet Modeling via Invariant Manifolds
Tea VojkoviÄ, David Quero, Rahul Jayaraj +3
In transonic flow over aircraft wings, shock-boundary-layer interactions can give rise to transonic buffet, which degrades maneuverability through unsteady aerodynamic loads. Beyon…
First observation of the Josephson-Anderson relation in experiments on hydrodynamic drag
Nicola Savelli, Ali R Khojasteh, Abel-John Buchner +2
We verify a recent prediction (Eq. 3.50 in G. L. Eyink, Phys. Rev. X 11, 031054 (2021)) for the drag on an object moving through a fluid. In this prediction the velocity field is d…
Dynamic stall of a hydrofoil with tubercles in surface gravity waves
Guillaume Ricard, Gunnar Jacobi, Daniele Fiscaletti +1
The interaction of an object with an unsteady flow is non-trivial and is still far from being fully understood. When an airfoil or hydrofoil, for example, undergoes time-dependent…
Reduced-Order Modelling and Closed-Loop Control of the Cylinder Wake
Tea VojkoviÄ, Dimitris Boskos, Abel-John Buchner
We present a model-based approach for the closed-loop control of vortex shedding in the cylinder wake. The control objective is to suppress the unsteadiness of the flow, which aris…