3 papers
physics.flu-dyn2026
Drag reduction regimes in air lubrication
Lina Nikolaidou, Ali R Khojasteh, Angeliki Laskari +2
Air lubrication regimes were studied using simultaneous drag force measurements and multi-plane imaging to characterize the regimes and identify the governing mechanisms of drag re…
physics.flu-dyn2025
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…
physics.flu-dyn2024
Coherent Structures Governing Transport at Turbulent Interfaces
Ali R Khojasteh, Lyke K van Dalen, Coen Been +2
In an experiment on a turbulent jet, we detect interfacial turbulent layers in a frame that moves, on average, along with the \tnti. This significantly prolongs the observation tim…