Evidence of singularities for a family of contour dynamics equations
Author(s) -
Diego Córdoba,
Marco A. Fontelos,
Ana M. Mancho,
José L. Rodrigo
Publication year - 2005
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.0501977102
Subject(s) - gravitational singularity , singularity , euler equations , limiting , dynamics (music) , mathematics , mathematical analysis , class (philosophy) , classical mechanics , physics , computer science , mechanical engineering , artificial intelligence , acoustics , engineering
In this work, we show evidence of the existence of singularities developing in finite time for a class of contour dynamics equations depending on a parameter 0 < alpha </= 1. The limiting case alpha --> 0 corresponds to 2D Euler equations, and alpha = 1 corresponds to the surface quasi-geostrophic equation. The singularity is point-like, and it is approached in a self-similar manner.
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