Concept
Eddy (fluid dynamics)
Related publications (353)
Improvements to the dynamic wake meandering model by incorporating the turbulent Schmidt number
Fernando Porté Agel, Peter Andreas Brugger, Corey Dean Markfort
Predictions of the dynamic wake meandering model (DWMM) were compared to flow measurements of a scanning Doppler lidar mounted on the nacelle of a utility-scale wind turbine. We observed that the wake meandering strength of the DWMM agrees better with the ...
2024An improved statistical wake meandering model
Fernando Porté Agel, Peter Andreas Brugger, Corey Dean Markfort
A new statistical wake meandering (SWM) model is proposed that improves on existing models in the literature. Compared to the existing SWM models, the proposed model has a closed description that does not require simulations to create look-up tables while ...
IOP Publishing2024Anomalous dissipation and other non-smooth phenomena in fluids
The thesis is dedicated to the study of two main partial differential equations (PDEs) in fluid dynamics: the Navier-Stokes equations, which describe the motion of incompressible fluids, and the transport equation with divergence-free velocity fields, whic ...
EPFL2024Ultra long turbulent eddies, magnetic topology, and the triggering of internal transport barriers in tokamaks
Stephan Brunner, Justin Richard Ball, Arnas Volcokas
Local nonlinear gyrokinetic simulations of tokamak plasmas demonstrate that turbulent eddies can extend along magnetic field lines for hundreds of poloidal turns when the magnetic shear is very small. By accurately modeling different field line topologies ...
IOP Publishing Ltd2023Permeability sets the linear path instability of buoyancy-driven disks
François Gallaire, Pier Giuseppe Ledda, Giuseppe Antonio Zampogna, Giovanni Vagnoli
The prediction of trajectories of buoyancy-driven objects immersed in a viscous fluid is a key problem in fluid dynamics. Simple-shaped objects, such as disks, present a great variety of trajectories, ranging from zig-zag to tumbling and chaotic motions. Y ...
CAMBRIDGE UNIV PRESS2023Including the turbulent Schmidt number in the dynamic wake meandering model
Fernando Porté Agel, Peter Andreas Brugger, Corey Dean Markfort
Wind turbine wakes are an important source of power losses and mechanical wear within wind farms. Wake meandering is a low-frequency oscillation of the entire wind turbine wake with respect to the time-averaged centerline. It affects power losses by contri ...
2023To break or not to break: The role of secondary mineralisation on joint reactivation in sandstone
Alexandra Roma Larisa Kushnir, Michael Heap
Discontinuities, including fractures and joint sets, modify the fluid transport properties and strength of rock masses. While open fractures and joints increase rock mass permeability and decrease rock mass strength, fluid flow within these structures can ...
2023Self-sustained dynamics and forced resonant oscillations in flows: cross-junction jets and sloshing liquids
In engineering, oscillatory instabilities and resonances are often considered undesirable flow features and measures are taken to avoid them. This may include avoiding certain parametric regions or implementing control and mitigation strategies. However, t ...
EPFL2023Low-Temperature Dynamics of Water Confined in Unidirectional Hydrophilic Zeolite Nanopores
Livia Eleonora Bove Kado, Umbertoluca Ranieri, Maria Rescigno
The dynamical properties of water molecules confinedin the unidirectionalhydrophilic nanopores of AlPO4-54 are investigated withquasi-elastic neutron scattering as a function of temperature downto 118 K. AlPO4-54 has among the largest pores known foralumin ...
AMER CHEMICAL SOC2023lifex-cfd: An open-source computational fluid dynamics solver for cardiovascular applications
Alfio Quarteroni, Luca Dede', Marco Fedele
Computational fluid dynamics (CFD) is an important tool for the simulation of the cardiovascular function and dysfunction. Due to the complexity of the anatomy, the transitional regime of blood flow in the heart, and the strong mutual influence between the ...
Amsterdam2023