Approximation of arbitrarily high-order PDEs by first-order hyperbolic relaxation

Autor: Ketcheson, David I., Biswas, Abhijit
Rok vydání: 2024
Předmět:
Druh dokumentu: Working Paper
Popis: We present a framework for constructing a first-order hyperbolic system whose solution approximates that of a desired higher-order evolution equation. Constructions of this kind have received increasing interest in recent years, and are potentially useful as either analytical or computational tools for understanding the corresponding higher-order equation. We perform a systematic analysis of a family of linear model equations and show that for each member of this family there is a stable hyperbolic approximation whose solution converges to that of the model equation in a certain limit. We then show through several examples that this approach can be applied successfully to a very wide range of nonlinear PDEs of practical interest.
Databáze: arXiv