Results 1 to 10 of about 2,983 (87)

Global Well-Posedness for the Thermodynamically Refined Passively Transported Nonlinear Moisture Dynamics with Phase Changes [PDF]

open access: yesJournal of nonlinear science, 2022
In this work we study the global solvability of moisture dynamics with phase changes for warm clouds. We thereby in comparison to previous studies (Hittmeir et al.
S. Hittmeir   +3 more
semanticscholar   +1 more source

Multi-scale dynamics of Kelvin–Helmholtz instabilities. Part 1. Secondary instabilities and the dynamics of tubes and knots

open access: yesJournal of Fluid Mechanics, 2022
We perform a direct numerical simulation (DNS) of interacting Kelvin–Helmholtz instabilities (KHI) that arise at a stratified shear layer where KH billow cores are misaligned or exhibit varying phases along their axes.
D. Fritts, L. Wang, T. Lund, S. Thorpe
semanticscholar   +1 more source

Association Between Resistance to Cerebrospinal Fluid Flow Near the Foramen Magnum and Cough-Associated Headache in Adult Chiari Malformation Type I.

open access: yesJournal of Biomechanical Engineering, 2021
BACKGROUND AND PURPOSE Cough-associated headaches (CAH) are thought to be distinctive for Chiari malformation type I (CMI) patients and have been shown to be related to the motion of cerebrospinal fluid (CSF) near the foramen magnum.
Alaaddin Ibrahimy   +5 more
semanticscholar   +1 more source

Multi-scale dynamics of Kelvin–Helmholtz instabilities. Part 2. Energy dissipation rates, evolutions and statistics

open access: yesJournal of Fluid Mechanics, 2022
Fritts et al. (J. Fluid Mech., vol. xx, 2022, xx) describe a direct numerical simulation of interacting Kelvin–Helmholtz instability (KHI) billows arising due to initial billow cores that exhibit variable phases along their axes. Such KHI exhibit strong ‘
D. Fritts, L. Wang, S. Thorpe, T. Lund
semanticscholar   +1 more source

Solitary Wave Solution of Flat Surface Internal Geophysical Waves with Vorticity [PDF]

open access: yes, 2017
A fluid system bounded by a flat bottom and a flat surface with an internal wave and depth-dependent current is considered. The Hamiltonian of the system is presented and the dynamics of the system are discussed. A long-wave regime is then considered and
Compelli, Alan
core   +3 more sources

Hamiltonian model for coupled surface and internal waves in the presence of currents [PDF]

open access: yes, 2017
We examine a two dimensional fluid system consisting of a lower medium bounded underneath by a flatbed and an upper medium with a free surface. The two media are separated by a free common interface.
Ivanov, Rossen
core   +3 more sources

Swimming of a uniform deformable sphere in a viscous incompressible fluid with inertia

open access: yes, 2020
The swimming of a deformable uniform sphere is studied in second order perturbation theory in the amplitude of the stroke. The effect of the first order reaction force on the first order center of mass velocity is calculated in linear response theory by ...
Felderhof, B. U., Jones, R. B.
core   +1 more source

Hamiltonian models for the propagation of irrotational surface gravity waves over a variable bottom [PDF]

open access: yes, 2017
A single incompressible, inviscid, irrotational fluid medium bounded by a free surface and varying bottom is considered. The Hamiltonian of the system is expressed in terms of the so-called Dirichlet-Neumann operators. The equations for the surface waves
Compelli, Alan   +2 more
core   +3 more sources

Is the Taylor–Proudman theorem exact in unbounded domains? Case study of the three-dimensional stability of a vortex pair in a rapidly rotating fluid

open access: yesJournal of Fluid Mechanics, 2021
Owing to the Taylor–Proudman theorem, it is generally believed that rotating flows should have two-dimensional dynamics for rapid background rotation.
P. Billant
semanticscholar   +1 more source

Comparison of POD reduced order strategies for the nonlinear 2D Shallow Water Equations [PDF]

open access: yes, 2014
This paper introduces tensorial calculus techniques in the framework of Proper Orthogonal Decomposition (POD) to reduce the computational complexity of the reduced nonlinear terms.
Adrian S   +3 more
core   +2 more sources

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