Quaternions and particle dynamics in the Euler fluid equations

JD Gibbon, DD Holm, RM Kerr, I Roulstone - Nonlinearity, 2006 - iopscience.iop.org
Vorticity dynamics of the three-dimensional incompressible Euler equations are cast into a
quaternionic representation governed by the Lagrangian evolution of the tetrad consisting of …

Singularities of Euler flow? Not out of the blue!

U Frisch, T Matsumoto, J Bec - Journal of statistical physics, 2003 - Springer
Does three-dimensional incompressible Euler flow with smooth initial conditions develop a
singularity with infinite vorticity after a finite time? This blowup problem is still open. After …

A quaternionic structure in the three-dimensional Euler and ideal magneto-hydrodynamics equations

JD Gibbon - Physica D: Nonlinear Phenomena, 2002 - Elsevier
By considering the three-dimensional incompressible Euler equations, a 4-vector ζ is
constructed out of a combination of scalar and vector products of the vorticity ω and the …

Tracking vortex surfaces frozen in the virtual velocity in non-ideal flows

J Hao, S **ong, Y Yang - Journal of Fluid Mechanics, 2019 - cambridge.org
We demonstrate that, if a globally smooth virtual circulation-preserving velocity exists,
Kelvin's and Helmholtz's theorems can be extended to some non-ideal flows which are …

Velocity and scaling of collapsing Euler vortices

RM Kerr - Physics of Fluids, 2005 - pubs.aip.org
New analysis of the scaling structure of a numerical solution of the Euler equations finds that
initially antiparallel vortex tubes collapse into two wings whose cross sections can be …

Orthonormal quaternion frames, Lagrangian evolution equations, and the three-dimensional Euler equations

J Gibbon - Russian Mathematical Surveys, 2007 - iopscience.iop.org
More than 160 years after their invention by Hamilton, quaternions are now widely used in
the aerospace and computer animation industries to track the orientation and paths of …

Solutions to Problems

W Kollmann - Navier-Stokes Turbulence: Theory and Analysis, 2024 - Springer
Solutions to Problems | SpringerLink Skip to main content Advertisement SpringerLink Account
Menu Find a journal Publish with us Track your research Search Cart 1.Home 2.Navier-Stokes …

Stability theory and Hamiltonian dynamics in the Euler ideal fluid equations

J Worthington - Bulletin of the Australian Mathematical Society, 2017 - cambridge.org
The study of shear flow steady states has led to a wealth of research in the field of fluid
dynamics. By studying shear flows, we can understand how a fluid behaves and how …

Existence of singular self-similar solutions of the three-dimensional Euler equations in a bounded domain

X He - Journal of Mathematical Fluid Mechanics, 2004 - Springer
A self-similar solution of the three-dimensional (3d) incompressible Euler equations is
defined by u (x, t)= U (y)/(t^*-t)^ α,\; y= x/(t^*-t)^ β, α, β> 0, where U (y) satisfies α U+ β y ⋅ ∇ …

[CARTE][B] Localized non-blowup conditions for three-dimensional incompressible Euler flows and related equations

X Yu - 2005 - search.proquest.com
Localized non-blowup conditions for three-dimensional incompressible Euler flows and related
equations Localized non-blowup conditions for three-dimensional incompressible Euler flows …