132 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Delft University of TechnologyNL34 papers
- Philipps University of MarburgDE24 papers
- Eindhoven University of TechnologyNL16 papers
- University of Rome Tor VergataIT11 papers
- Harvard UniversityUS6 papers
- Max Planck Institute for Dynamics and Self-OrganizationDE5 papers
- University of TwenteNL5 papers
- Centre National de la Recherche ScientifiqueFR4 papers
- Istituto per le Applicazioni del Calcolo Mauro PiconeIT4 papers
- TIFR Centre for Interdisciplinary SciencesIN4 papers
- Swedish e-Science Research CentreSE3 papers
- Universitat Politècnica de CatalunyaES3 papers
42 papers · 1 filter
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-informed coherent motions to predict Lagrangian trajectories
Ali R Khojasteh, Dominique Heitz
Accurate prediction of Lagrangian trajectories in turbulent flow remains challenging due to limited temporal information in transport functions. This paper shows that surrounding c…
Discovery of a Physically Interpretable Data-Driven Wind-Turbine Wake Model
Kherlen Jigjid, Ali Eidi, Nguyen Anh Khoa Doan +1
This study presents a compact data-driven Reynolds-averaged Navier-Stokes (RANS) model for wind turbine wake prediction, built as an enhancement of the standard \(k\)-\(\varepsilon…
Entrapment of Interfacial Nanobubbles on Nano Structured Surfaces
Yuliang Wang, Xiaolai Li, Shuai Ren +3
Spherical-cap-shaped interfacial nanobubbles (NBs) forming on hydrophobic surfaces in aqueous solutions have extensively been studied both from a fundamental point of view and due…
The effect of the Stokes boundary layer on the dynamics of particle pairs in an oscillatory flow
T. J. J. M. van Overveld, W. -P. Breugem, H. J. H. Clercx +1
The alignment of a pair of spherical particles perpendicular to a horizontally oscillating flow is attributed to a non-zero residual flow, known as steady streaming. This phenomeno…
Viscous vortex layers subject to more general strain and comparison to isotropic turbulence
Karim Shariff, Gerrit Elsinga
Viscous vortex layers subject to a more general uniform strain are considered. They include Townsend's steady solution for plane strain (corresponding to a parameter ) in wh…
Effects of thermal fluctuations in the fragmentation of a nano-ligament
Xiao Xue, Mauro Sbragaglia, Luca Biferale +1
We study the effects of thermally induced capillary waves in the fragmentation of a liquid ligament into multiple nano-droplets. Our numerical implementation is based on a fluctuat…
Analysis and modeling of localized invariant solutions in pipe flow
Paul Ritter, Stefan Zammert, Bruno Eckhardt +1
Turbulent spots surrounded by laminar flow are a landmark of transitional shear flows, but the dependence of their kinematic properties on spatial structure is poorly understood. W…
Transition to turbulence when the Tollmien-Schlichting and bypass routes coexist
Stefan Zammert, Bruno Eckhardt
Plane Poiseuille flow, the pressure driven flow between parallel plates, shows a route to turbulence connected with a linear instability to Tollmien-Schlichting (TS) waves, and ano…
The effect of finger spreading on drag of the hand in human swimming
Josje van Houwelingen, Dennis H. J. Willemsen, Rudie P. J. Kunnen +7
The effect of finger spreading on hydrodynamic drag in swimming is studied both with a numerical simulation and with laboratory experiments. Both approaches are based on the exact…
Streamwise decay of localized states in channel flow
Stefan Zammert, Bruno Eckhardt
Channel flow, the pressure driven flow between parallel plates, has exact coherent structures that show various degrees of localization. For states which are localized in streamwis…
Heat transport in Rayleigh-Benard convection and angular momentum transport in Taylor-Couette flow: a comparative study
Hannes Brauckmann, Bruno Eckhardt, Joerg Schumacher
Rayleigh-Benard convection and Taylor-Couette flow are two canonical flows that have many properties in common. We here compare the two flows in detail for parameter values where t…
Marginally stable and turbulent boundary layers in low-curvature Taylor-Couette flow
Hannes J. Brauckmann, Bruno Eckhardt
Marginal stability arguments are used to describe the rotation-number dependence of torque in Taylor-Couette (TC) flow for radius ratios and shear Reynolds number $Re_S…
Harbingers and latecomers - The order of appearance of exact coherent structures in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
The transition to turbulence in plane Poiseuille flow (PPF) is connected with the presence of exact coherent structures. In contrast to other shear flows, PPF has a number of diffe…
Edge states as mediators of bypass transition in boundary-layer flows
Taras Khapko, Tobias Kreilos, Philipp Schlatter +3
The concept of edge state is investigated in the asymptotic suction boundary layer in relation with the receptivity process to noisy perturbations and the nucleation of turbulent s…
Laser impact on a drop
Alexander L. Klein, Claas Willem Visser, Wilco Bouwhuis +6
The impact of a laser pulse on a highly absorbing liquid drop can lead to a violent response: the drop is accelerated, strongly deforms, and eventually fragments. Shock waves, the…
Transition in the asymptotic suction boundary layer over a heated plate
Stefan Zammert, Nicolas Fischer, Bruno Eckhardt
The asymptotic suction boundary layer (ASBL) is a parallel shear flow that becomes turbulent in a bypass transition in parameter regions where the laminar profile is stable. We her…
Marangoni driven turbulence in high energy surface melting processes
Anton Kidess, Saša Kenjereš, Bernhard W. Righolt +1
Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool. Surpr…
Momentum transport in Taylor-Couette flow with vanishing curvature
Hannes J. Brauckmann, Matthew Salewski, Bruno Eckhardt
We numerically study turbulent Taylor-Couette flow (TCF) between two independently rotating cylinders and the transition to rotating plane Couette flow (RPCF) in the limit of infin…
Channel flow of rigid sphere suspensions: particle dynamics in the inertial regime
Iman Lashgari, Francesco Picano, Wim Paul Breugem +1
We consider suspensions of neutrally-buoyant finite-size rigid spherical particles in channel flow and investigate the relation between the particle dynamics and the mean bulk beha…
Direct and noisy transitions in a model shear flow
Marina Pausch, Bruno Eckhardt
The transition to turbulence in flows where the laminar profile is linearly stable requires perturbations of finite amplitude. "Optimal" perturbations are distinguished as extrema…
Crisis bifurcations in plane Poiseuille flow
Stefan Zammert, Bruno Eckhardt
Many shear flows follow a route to turbulence that has striking similarities to bifurcation scenarios in low-dimensional dynamical systems. Among the bifurcations that appear, cris…
Turbulent states in plane Couette flow with rotation
Matthew Salewski, Bruno Eckhardt
Shearing and rotational forces in fluids can significantly alter the transport of momentum.A numerical investigation was undertaken to study the role of these forces using plane Co…
Clustering of vertically constrained passive particles in homogeneous, isotropic turbulence
Massimo De Pietro, Michel A. T. van Hinsberg, Luca Biferale +3
We analyze the dynamics of small particles vertically confined, by means of a linear restoring force, to move within a horizontal fluid slab in a three-dimensional (3D) homogeneous…