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Nonlinearly perturbed hyperbolic conservation laws

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Resumo:In this presentation we attempt to stress two points of view on hyperbolic conservation laws: modelization and analytical theory. And, how they are sensitively related. While appliers are concerned with reliability, integrity or failure of solutions, mathematcians are concerned with non uniqueness, selection of physically relevant solutions or entropy criteria. In the modeling process, within simplifications, some “spurious terms” are usually discarded from the equations and so, in order to address uniqueness, a crucial information is lost. We discuss here the relevant dissipative or dispersive effect of some of those small scale terms (zero singular limits).
Autores principais:Correia, Joaquim
Assunto:Hyperbolic conservation law shock wave entropy weak solution measure-valued solution dissipation dispersion diffusion capilllarity Burgers equation KdV-type equation
Ano:2014
País:Portugal
Tipo de documento:palestra
Tipo de acesso:acesso aberto
Instituição associada:Universidade de Évora
Idioma:inglês
Origem:Repositório Científico da Universidade de Évora

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