3D Euler about a 2D symmetry plane
Bustamante, Miguel D. and Kerr, Robert M.. (2008) 3D Euler about a 2D symmetry plane. Physica D: Nonlinear Phenomena, Vol.237 (No.14-17). pp. 1912-1920. ISSN 0167-2789Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.physd.2008.02.007
Initial results from new calculations of interacting anti-parallel Euler vortices are presented with the objective of understanding the origins of singular scaling presented by Kerr [R.M. Kerr, Evidence for a singularity of the three-dimensional, incompressible Euler equations, Phys. Fluids 5 (1993) 1725-1746] and the lack thereof by Hou and Li [TY. Hou, R. Li, Dynamic depletion of vortex stretching and non-blowup of the 3-D incompressible Euler equations, J. Nonlinear Sci. 16 (2006) 639-664]. Core profiles designed to reproduce the two results are presented, new more robust analysis is proposed, and new criteria for when calculations should be terminated are introduced and compared with classical resolution studies and spectral convergence tests. Most of the analysis is on a 512 x 128 x 2048 mesh, with new analysis on a just completed 1024 x 256 x 2048 used to confirm trends. One might hypothesize that there is a finite-time singularity with enstrophy growth like Omega similar to (T-c - t)(-gamma Omega) and vorticity growth like parallel to omega parallel to(infinity) similar to (T-c - t)(-gamma). The new analysis would then support gamma Omega approximate to 1/2 and gamma > 1. These represent modifications of the conclusions of Kerr [op. cit.]. Issues that might arise at higher resolution are discussed. (C) 2008 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QA Mathematics
Q Science > QC Physics
|Divisions:||Faculty of Science > Engineering
Faculty of Science > Mathematics
|Library of Congress Subject Headings (LCSH):||Lagrange equations, Singularities (Mathematics), Fluid mechanics, Vortex-motion|
|Journal or Publication Title:||Physica D: Nonlinear Phenomena|
|Official Date:||15 August 2008|
|Number of Pages:||9|
|Page Range:||pp. 1912-1920|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Leverhulme Foundation, University of Warwick. Centre for Scientific Computing|
|Grant number:||F/00 215/AC (LF)|
 L. Euler, Principia motus fluidorum., Novi Commentarii Acad. Sci.
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