Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X



On a two-point free boundary problem

Authors: Jong-Shenq Guo and Bei Hu
Journal: Quart. Appl. Math. 64 (2006), 413-431
MSC (2000): Primary 35K20, 35K55
DOI: https://doi.org/10.1090/S0033-569X-06-01021-1
Published electronically: June 12, 2006
MathSciNet review: 2259046
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Abstract: We study a two-point free boundary problem for a quasilinear parabolic equation. This problem arises in the model of flame propagation in combustion theory. It also arises in the study of the motion of interface moving with curvature in which the studied problem is confined in the conical region bounded by two straight lines and the interface has prescribed touching angles with these two straight lines. Depending on these two touching angles, there are three different cases, namely, area-expanding, area-preserving, and area-shrinking cases. We first give a proof of the global existence in the expanding and preserving cases. Then the convergence to a line in the preserving case is derived. Finally, in the shrinking case, we show the finite-time vanishing and the convergence of the solution to a self-similar solution.

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Additional Information

Jong-Shenq Guo
Affiliation: Department of Mathematics, National Taiwan Normal University, S-4 Ting Chou Road, Taipei 117, Taiwan
Email: jsguo@math.ntnu.edu.tw

Bei Hu
Affiliation: Department of Mathematics, University of Notre Dame, Room 255, Hurley, Notre Dame, Indiana 46556
Email: b1hu@nd.edu

DOI: https://doi.org/10.1090/S0033-569X-06-01021-1
Received by editor(s): January 18, 2005
Published electronically: June 12, 2006
Article copyright: © Copyright 2006 Brown University
The copyright for this article reverts to public domain 28 years after publication.

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