Moving mesh for the axisymmetric harmonic map flow

Benoit Merlet; Morgan Pierre

ESAIM: Mathematical Modelling and Numerical Analysis (2010)

  • Volume: 39, Issue: 4, page 781-796
  • ISSN: 0764-583X

Abstract

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We build corotational symmetric solutions to the harmonic map flow from the unit disc into the unit sphere which have constant degree. First, we prove the existence of such solutions, using a time semi-discrete scheme based on the idea that the harmonic map flow is the L2-gradient of the relaxed Dirichlet energy. We prove a partial uniqueness result concerning these solutions. Then, we compute numerically these solutions by a moving-mesh method which allows us to deal with the singularity at the origin. We show numerical evidence of the convergence of the method.

How to cite

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Merlet, Benoit, and Pierre, Morgan. "Moving mesh for the axisymmetric harmonic map flow." ESAIM: Mathematical Modelling and Numerical Analysis 39.4 (2010): 781-796. <http://eudml.org/doc/194286>.

@article{Merlet2010,
abstract = { We build corotational symmetric solutions to the harmonic map flow from the unit disc into the unit sphere which have constant degree. First, we prove the existence of such solutions, using a time semi-discrete scheme based on the idea that the harmonic map flow is the L2-gradient of the relaxed Dirichlet energy. We prove a partial uniqueness result concerning these solutions. Then, we compute numerically these solutions by a moving-mesh method which allows us to deal with the singularity at the origin. We show numerical evidence of the convergence of the method. },
author = {Merlet, Benoit, Pierre, Morgan},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis},
keywords = {Moving mesh; finite elements; harmonic map flow; axisymmetric.; moving mesh; axisymmetric; corotational initial data; corotational degree},
language = {eng},
month = {3},
number = {4},
pages = {781-796},
publisher = {EDP Sciences},
title = {Moving mesh for the axisymmetric harmonic map flow},
url = {http://eudml.org/doc/194286},
volume = {39},
year = {2010},
}

TY - JOUR
AU - Merlet, Benoit
AU - Pierre, Morgan
TI - Moving mesh for the axisymmetric harmonic map flow
JO - ESAIM: Mathematical Modelling and Numerical Analysis
DA - 2010/3//
PB - EDP Sciences
VL - 39
IS - 4
SP - 781
EP - 796
AB - We build corotational symmetric solutions to the harmonic map flow from the unit disc into the unit sphere which have constant degree. First, we prove the existence of such solutions, using a time semi-discrete scheme based on the idea that the harmonic map flow is the L2-gradient of the relaxed Dirichlet energy. We prove a partial uniqueness result concerning these solutions. Then, we compute numerically these solutions by a moving-mesh method which allows us to deal with the singularity at the origin. We show numerical evidence of the convergence of the method.
LA - eng
KW - Moving mesh; finite elements; harmonic map flow; axisymmetric.; moving mesh; axisymmetric; corotational initial data; corotational degree
UR - http://eudml.org/doc/194286
ER -

References

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