Approximation of entropy solutions to degenerate nonlinear parabolic equations
Eduardo Abreu, Mathilde Colombeau, Evgeny YU Panov
ARTIGO
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We approximate the unique entropy solutions to general multidimensional degenerate parabolic equations with BV continuous flux and continuous nondecreasing diffusion function (including scalar conservation laws with BV continuous flux) in the periodic case. The approximation procedure reduces, by...
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We approximate the unique entropy solutions to general multidimensional degenerate parabolic equations with BV continuous flux and continuous nondecreasing diffusion function (including scalar conservation laws with BV continuous flux) in the periodic case. The approximation procedure reduces, by means of specific formulas, a system of PDEs to a family of systems of the same number of ODEs in the Banach space L∞, whose solutions constitute a weak asymptotic solution of the original system of PDEs. We establish well posedness, monotonicity and L1-stability. We prove that the sequence of approximate solutions is strongly L1-precompact and that it converges to an entropy solution of the original equation in the sense of Carrillo. This result contributes to justify the use of this original method for the Cauchy problem to standard multidimensional systems of fluid dynamics for which a uniqueness result is lacking
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2016/233741; 2012/15780-9
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
445758/2014-7
fechado
Approximation of entropy solutions to degenerate nonlinear parabolic equations
Eduardo Abreu, Mathilde Colombeau, Evgeny YU Panov
Approximation of entropy solutions to degenerate nonlinear parabolic equations
Eduardo Abreu, Mathilde Colombeau, Evgeny YU Panov
Fontes
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Zeitschrift fuer angewandte mathematik und physik (Fonte avulsa) |