Acta mathematica scientia,Series A ›› 2026, Vol. 46 ›› Issue (2): 604-615.

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Flux-Limited Diffusion Equations and Their $BV$ Theory

Yong Luo1(), Chunpeng Wang1(), Jingxue Yin1,2,*()   

  1. 1 School of Mathematics, Jilin University, Changchun 130012
    2 School of Mathematical Sciences, South China Normal University, Guangzhou 510631
  • Received:2025-12-19 Revised:2025-01-04 Online:2026-04-26 Published:2026-04-27
  • Contact: Jingxue Yin E-mail:wangcp@jlu.edu.cn;yjx@scnu.edu.cn

Abstract:

We briefly review the $BV$ entropy theory for a class of flux-limited diffusion equations, including the notion and well-posedness of entropy solutions, the hyperbolic features and entropy conditions, and the finite speed of propagation. The purpose is to serve as a basic theoretical framework for subsequent investigations of nonlinear parabolic equations exhibiting large-gradient degeneracy.

Key words: flux-limited diffusion, $BV$ entropy solution, hyperbolic features, finite propagation

CLC Number: 

  • O175.29
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