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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

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

   
 
 

 

On generalized diffusion and heat systems on an evolving surface with a boundary


Author: Hajime Koba
Journal: Quart. Appl. Math. 78 (2020), 617-640
MSC (2010): Primary 97M50; Secondary 49S05, 49Q20
DOI: https://doi.org/10.1090/qam/1564
Published electronically: December 12, 2019
MathSciNet review: 4148821
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Abstract | References | Similar Articles | Additional Information

Abstract: We consider a diffusion process on an evolving surface with a piecewise Lipschitz-continuous boundary from an energetic point of view. We employ an energetic variational approach with both surface divergence and transport theorems to derive the generalized diffusion and heat systems on the evolving surface. Moreover, we investigate the boundary conditions for the two systems to study their conservation and energy laws. As an application, we make a mathematical model for a diffusion process on an evolving double bubble. Specifically, this paper is devoted to deriving the representation formula for the unit outer co-normal vector to the boundary of a surface.


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Additional Information

Hajime Koba
Affiliation: Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka, 560-8531, Japan
MR Author ID: 1013948
Email: iti@sigmath.es.osaka-u.ac.jp

Keywords: Mathematical modeling, energetic variational approach, evolving surface with boundary, boundary condition in co-normal direction, double bubble
Received by editor(s): October 14, 2019
Received by editor(s) in revised form: October 31, 2019
Published electronically: December 12, 2019
Additional Notes: This work was partly supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP15K17580.
Article copyright: © Copyright 2019 Brown University